CVE-2025-5271
Devtools' preview ignored CSP headers
CVE-2025-5271 is fixed in 310 products on 2 platforms, first by Firefox Developer Edition (ach) 139.0, released May 18, 2025. It is not reported as exploited. Patch Radar priority: Routine.
RoutineFixed on 2 platforms
CVSS
6.5
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0030
23rd percentile
Previewing a response in Devtools ignored CSP headers, which could have allowed content injection attacks. This vulnerability was fixed in Firefox 139 and Thunderbird 139.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Windows apps | |||
| Firefox Developer Edition (ach) | 139.0 | Firefox Developer Edition (ach) 139.0 | May 18, 2025 |
| Firefox Developer Edition (af) | 139.0 | Firefox Developer Edition (af) 139.0 | May 18, 2025 |
| Firefox Developer Edition (an) | 139.0 | Firefox Developer Edition (an) 139.0 | May 18, 2025 |
| Firefox Developer Edition (ar) | 139.0 | Firefox Developer Edition (ar) 139.0 | May 18, 2025 |
| Firefox Developer Edition (ast) | 139.0 | Firefox Developer Edition (ast) 139.0 | May 18, 2025 |
| Firefox Developer Edition (az) | 139.0 | Firefox Developer Edition (az) 139.0 | May 18, 2025 |
| Firefox Developer Edition (be) | 139.0 | Firefox Developer Edition (be) 139.0 | May 18, 2025 |
| Firefox Developer Edition (bg) | 139.0 | Firefox Developer Edition (bg) 139.0 | May 18, 2025 |
| Firefox Developer Edition (bn) | 139.0 | Firefox Developer Edition (bn) 139.0 | May 18, 2025 |
| Firefox Developer Edition (br) | 139.0 | Firefox Developer Edition (br) 139.0 | May 18, 2025 |
| Firefox Developer Edition (bs) | 139.0 | Firefox Developer Edition (bs) 139.0 | May 18, 2025 |
| Firefox Developer Edition (ca) | 139.0 | Firefox Developer Edition (ca) 139.0 | May 18, 2025 |
| Firefox Developer Edition (ca-valencia) | 139.0 | Firefox Developer Edition (ca-valencia) 139.0 | May 18, 2025 |
| Firefox Developer Edition (cak) | 139.0 | Firefox Developer Edition (cak) 139.0 | May 18, 2025 |
| Firefox Developer Edition (cs) | 139.0 | Firefox Developer Edition (cs) 139.0 | May 18, 2025 |
| Firefox Developer Edition (cy) | 139.0 | Firefox Developer Edition (cy) 139.0 | May 18, 2025 |
| Firefox Developer Edition (da) | 139.0 | Firefox Developer Edition (da) 139.0 | May 18, 2025 |
| Firefox Developer Edition (de) | 139.0 | Firefox Developer Edition (de) 139.0 | May 18, 2025 |
| Firefox Developer Edition (dsb) | 139.0 | Firefox Developer Edition (dsb) 139.0 | May 18, 2025 |
| Firefox Developer Edition (el) | 139.0 | Firefox Developer Edition (el) 139.0 | May 18, 2025 |
| Firefox Developer Edition (en-CA) | 139.0 | Firefox Developer Edition (en-CA) 139.0 | May 18, 2025 |
| Firefox Developer Edition (en-GB) | 139.0 | Firefox Developer Edition (en-GB) 139.0 | May 18, 2025 |
| Firefox Developer Edition (en-US) | 139.0 | Firefox Developer Edition (en-US) 139.0 | May 18, 2025 |
| Firefox Developer Edition (eo) | 139.0 | Firefox Developer Edition (eo) 139.0 | May 18, 2025 |
| Firefox Developer Edition (es-AR) | 139.0 | Firefox Developer Edition (es-AR) 139.0 | May 18, 2025 |
| Firefox Developer Edition (es-CL) | 139.0 | Firefox Developer Edition (es-CL) 139.0 | May 18, 2025 |
| Firefox Developer Edition (es-ES) | 139.0 | Firefox Developer Edition (es-ES) 139.0 | May 18, 2025 |
| Firefox Developer Edition (es-MX) | 139.0 | Firefox Developer Edition (es-MX) 139.0 | May 18, 2025 |
| Firefox Developer Edition (et) | 139.0 | Firefox Developer Edition (et) 139.0 | May 18, 2025 |
| Firefox Developer Edition (eu) | 139.0 | Firefox Developer Edition (eu) 139.0 | May 18, 2025 |
| Firefox Developer Edition (fa) | 139.0 | Firefox Developer Edition (fa) 139.0 | May 18, 2025 |
| Firefox Developer Edition (ff) | 139.0 | Firefox Developer Edition (ff) 139.0 | May 18, 2025 |
| Firefox Developer Edition (fi) | 139.0 | Firefox Developer Edition (fi) 139.0 | May 18, 2025 |
| Firefox Developer Edition (fr) | 139.0 | Firefox Developer Edition (fr) 139.0 | May 18, 2025 |
| Firefox Developer Edition (fur) | 139.0 | Firefox Developer Edition (fur) 139.0 | May 18, 2025 |
| Firefox Developer Edition (fy-NL) | 139.0 | Firefox Developer Edition (fy-NL) 139.0 | May 18, 2025 |
| Firefox Developer Edition (ga-IE) | 139.0 | Firefox Developer Edition (ga-IE) 139.0 | May 18, 2025 |
| Firefox Developer Edition (gd) | 139.0 | Firefox Developer Edition (gd) 139.0 | May 18, 2025 |
| Firefox Developer Edition (gl) | 139.0 | Firefox Developer Edition (gl) 139.0 | May 18, 2025 |
| Firefox Developer Edition (gn) | 139.0 | Firefox Developer Edition (gn) 139.0 | May 18, 2025 |
| Firefox Developer Edition (gu-IN) | 139.0 | Firefox Developer Edition (gu-IN) 139.0 | May 18, 2025 |
| Firefox Developer Edition (he) | 139.0 | Firefox Developer Edition (he) 139.0 | May 18, 2025 |
| Firefox Developer Edition (hi-IN) | 139.0 | Firefox Developer Edition (hi-IN) 139.0 | May 18, 2025 |
| Firefox Developer Edition (hr) | 139.0 | Firefox Developer Edition (hr) 139.0 | May 18, 2025 |
| Firefox Developer Edition (hsb) | 139.0 | Firefox Developer Edition (hsb) 139.0 | May 18, 2025 |
| Firefox Developer Edition (hu) | 139.0 | Firefox Developer Edition (hu) 139.0 | May 18, 2025 |
| Firefox Developer Edition (hy-AM) | 139.0 | Firefox Developer Edition (hy-AM) 139.0 | May 18, 2025 |
| Firefox Developer Edition (ia) | 139.0 | Firefox Developer Edition (ia) 139.0 | May 18, 2025 |
| Firefox Developer Edition (id) | 139.0 | Firefox Developer Edition (id) 139.0 | May 18, 2025 |
| Firefox Developer Edition (is) | 139.0 | Firefox Developer Edition (is) 139.0 | May 18, 2025 |
| Firefox Developer Edition (it) | 139.0 | Firefox Developer Edition (it) 139.0 | May 18, 2025 |
| Firefox Developer Edition (ja) | 139.0 | Firefox Developer Edition (ja) 139.0 | May 18, 2025 |
| Firefox Developer Edition (ka) | 139.0 | Firefox Developer Edition (ka) 139.0 | May 18, 2025 |
| Firefox Developer Edition (kab) | 139.0 | Firefox Developer Edition (kab) 139.0 | May 18, 2025 |
| Firefox Developer Edition (kk) | 139.0 | Firefox Developer Edition (kk) 139.0 | May 18, 2025 |
| Firefox Developer Edition (km) | 139.0 | Firefox Developer Edition (km) 139.0 | May 18, 2025 |
| Firefox Developer Edition (kn) | 139.0 | Firefox Developer Edition (kn) 139.0 | May 18, 2025 |
| Firefox Developer Edition (ko) | 139.0 | Firefox Developer Edition (ko) 139.0 | May 18, 2025 |
| Firefox Developer Edition (lij) | 139.0 | Firefox Developer Edition (lij) 139.0 | May 18, 2025 |
| Firefox Developer Edition (lt) | 139.0 | Firefox Developer Edition (lt) 139.0 | May 18, 2025 |
| Firefox Developer Edition (lv) | 139.0 | Firefox Developer Edition (lv) 139.0 | May 18, 2025 |
| Firefox Developer Edition (mk) | 139.0 | Firefox Developer Edition (mk) 139.0 | May 18, 2025 |
| Firefox Developer Edition (mr) | 139.0 | Firefox Developer Edition (mr) 139.0 | May 18, 2025 |
| Firefox Developer Edition (ms) | 139.0 | Firefox Developer Edition (ms) 139.0 | May 18, 2025 |
| Firefox Developer Edition (my) | 139.0 | Firefox Developer Edition (my) 139.0 | May 18, 2025 |
| Firefox Developer Edition (nb-NO) | 139.0 | Firefox Developer Edition (nb-NO) 139.0 | May 18, 2025 |
| Firefox Developer Edition (ne-NP) | 139.0 | Firefox Developer Edition (ne-NP) 139.0 | May 18, 2025 |
| Firefox Developer Edition (nl) | 139.0 | Firefox Developer Edition (nl) 139.0 | May 18, 2025 |
| Firefox Developer Edition (nn-NO) | 139.0 | Firefox Developer Edition (nn-NO) 139.0 | May 18, 2025 |
| Firefox Developer Edition (oc) | 139.0 | Firefox Developer Edition (oc) 139.0 | May 18, 2025 |
| Firefox Developer Edition (pa-IN) | 139.0 | Firefox Developer Edition (pa-IN) 139.0 | May 18, 2025 |
| Firefox Developer Edition (pl) | 139.0 | Firefox Developer Edition (pl) 139.0 | May 18, 2025 |
| Firefox Developer Edition (pt-BR) | 139.0 | Firefox Developer Edition (pt-BR) 139.0 | May 18, 2025 |
| Firefox Developer Edition (pt-PT) | 139.0 | Firefox Developer Edition (pt-PT) 139.0 | May 18, 2025 |
| Firefox Developer Edition (rm) | 139.0 | Firefox Developer Edition (rm) 139.0 | May 18, 2025 |
| Firefox Developer Edition (ro) | 139.0 | Firefox Developer Edition (ro) 139.0 | May 18, 2025 |
| Firefox Developer Edition (ru) | 139.0 | Firefox Developer Edition (ru) 139.0 | May 18, 2025 |
| Firefox Developer Edition (sc) | 139.0 | Firefox Developer Edition (sc) 139.0 | May 18, 2025 |
| Firefox Developer Edition (sco) | 139.0 | Firefox Developer Edition (sco) 139.0 | May 18, 2025 |
| Firefox Developer Edition (si) | 139.0 | Firefox Developer Edition (si) 139.0 | May 18, 2025 |
| Firefox Developer Edition (sk) | 139.0 | Firefox Developer Edition (sk) 139.0 | May 18, 2025 |
| Firefox Developer Edition (sl) | 139.0 | Firefox Developer Edition (sl) 139.0 | May 18, 2025 |
| Firefox Developer Edition (son) | 139.0 | Firefox Developer Edition (son) 139.0 | May 18, 2025 |
| Firefox Developer Edition (sq) | 139.0 | Firefox Developer Edition (sq) 139.0 | May 18, 2025 |
| Firefox Developer Edition (sr) | 139.0 | Firefox Developer Edition (sr) 139.0 | May 18, 2025 |
| Firefox Developer Edition (sv-SE) | 139.0 | Firefox Developer Edition (sv-SE) 139.0 | May 18, 2025 |
| Firefox Developer Edition (szl) | 139.0 | Firefox Developer Edition (szl) 139.0 | May 18, 2025 |
| Firefox Developer Edition (ta) | 139.0 | Firefox Developer Edition (ta) 139.0 | May 18, 2025 |
| Firefox Developer Edition (te) | 139.0 | Firefox Developer Edition (te) 139.0 | May 18, 2025 |
| Firefox Developer Edition (tg) | 139.0 | Firefox Developer Edition (tg) 139.0 | May 18, 2025 |
| Firefox Developer Edition (th) | 139.0 | Firefox Developer Edition (th) 139.0 | May 18, 2025 |
| Firefox Developer Edition (tl) | 139.0 | Firefox Developer Edition (tl) 139.0 | May 18, 2025 |
| Firefox Developer Edition (tr) | 139.0 | Firefox Developer Edition (tr) 139.0 | May 18, 2025 |
| Firefox Developer Edition (trs) | 139.0 | Firefox Developer Edition (trs) 139.0 | May 18, 2025 |
| Firefox Developer Edition (uk) | 139.0 | Firefox Developer Edition (uk) 139.0 | May 18, 2025 |
| Firefox Developer Edition (ur) | 139.0 | Firefox Developer Edition (ur) 139.0 | May 18, 2025 |
| Firefox Developer Edition (uz) | 139.0 | Firefox Developer Edition (uz) 139.0 | May 18, 2025 |
| Firefox Developer Edition (vi) | 139.0 | Firefox Developer Edition (vi) 139.0 | May 18, 2025 |
| Firefox Developer Edition (xh) | 139.0 | Firefox Developer Edition (xh) 139.0 | May 18, 2025 |
| Firefox Developer Edition (zh-CN) | 139.0 | Firefox Developer Edition (zh-CN) 139.0 | May 18, 2025 |
| Firefox Developer Edition (zh-TW) | 139.0 | Firefox Developer Edition (zh-TW) 139.0 | May 18, 2025 |
| Mozilla Firefox (ach) | 139.0 | Mozilla Firefox (ach) 139.0 | May 27, 2025 |
| Mozilla Firefox (af) | 139.0 | Mozilla Firefox (af) 139.0 | May 27, 2025 |
| Mozilla Firefox (an) | 139.0 | Mozilla Firefox (an) 139.0 | May 27, 2025 |
| Mozilla Firefox (ar) | 139.0 | Mozilla Firefox (ar) 139.0 | May 27, 2025 |
| Mozilla Firefox (ast) | 139.0 | Mozilla Firefox (ast) 139.0 | May 27, 2025 |
| Mozilla Firefox (az) | 139.0 | Mozilla Firefox (az) 139.0 | May 27, 2025 |
| Mozilla Firefox (be) | 139.0 | Mozilla Firefox (be) 139.0 | May 27, 2025 |
| Mozilla Firefox (bg) | 139.0 | Mozilla Firefox (bg) 139.0 | May 27, 2025 |
| Mozilla Firefox (bn) | 139.0 | Mozilla Firefox (bn) 139.0 | May 27, 2025 |
| Mozilla Firefox (br) | 139.0 | Mozilla Firefox (br) 139.0 | May 27, 2025 |
| Mozilla Firefox (bs) | 139.0 | Mozilla Firefox (bs) 139.0 | May 27, 2025 |
| Mozilla Firefox (ca) | 139.0 | Mozilla Firefox (ca) 139.0 | May 27, 2025 |
| Mozilla Firefox (ca-valencia) | 139.0 | Mozilla Firefox (ca-valencia) 139.0 | May 27, 2025 |
| Mozilla Firefox (cak) | 139.0 | Mozilla Firefox (cak) 139.0 | May 27, 2025 |
| Mozilla Firefox (cs) | 139.0 | Mozilla Firefox (cs) 139.0 | May 27, 2025 |
| Mozilla Firefox (cy) | 139.0 | Mozilla Firefox (cy) 139.0 | May 27, 2025 |
| Mozilla Firefox (da) | 139.0 | Mozilla Firefox (da) 139.0 | May 27, 2025 |
| Mozilla Firefox (de) | 139.0 | Mozilla Firefox (de) 139.0 | May 27, 2025 |
| Mozilla Firefox (dsb) | 139.0 | Mozilla Firefox (dsb) 139.0 | May 27, 2025 |
| Mozilla Firefox (el) | 139.0 | Mozilla Firefox (el) 139.0 | May 27, 2025 |
| Mozilla Firefox (en-CA) | 139.0 | Mozilla Firefox (en-CA) 139.0 | May 27, 2025 |
| Mozilla Firefox (en-GB) | 139.0 | Mozilla Firefox (en-GB) 139.0 | May 27, 2025 |
| Mozilla Firefox (en-US) | 139.0 | Mozilla Firefox (en-US) 139.0 | May 27, 2025 |
| Mozilla Firefox (eo) | 139.0 | Mozilla Firefox (eo) 139.0 | May 27, 2025 |
| Mozilla Firefox (es-AR) | 139.0 | Mozilla Firefox (es-AR) 139.0 | May 27, 2025 |
| Mozilla Firefox (es-CL) | 139.0 | Mozilla Firefox (es-CL) 139.0 | May 27, 2025 |
| Mozilla Firefox (es-ES) | 139.0 | Mozilla Firefox (es-ES) 139.0 | May 27, 2025 |
| Mozilla Firefox (es-MX) | 139.0 | Mozilla Firefox (es-MX) 139.0 | May 27, 2025 |
| Mozilla Firefox (et) | 139.0 | Mozilla Firefox (et) 139.0 | May 27, 2025 |
| Mozilla Firefox (eu) | 139.0 | Mozilla Firefox (eu) 139.0 | May 27, 2025 |
| Mozilla Firefox (fa) | 139.0 | Mozilla Firefox (fa) 139.0 | May 27, 2025 |
| Mozilla Firefox (ff) | 139.0 | Mozilla Firefox (ff) 139.0 | May 27, 2025 |
| Mozilla Firefox (fi) | 139.0 | Mozilla Firefox (fi) 139.0 | May 27, 2025 |
| Mozilla Firefox (fr) | 139.0 | Mozilla Firefox (fr) 139.0 | May 27, 2025 |
| Mozilla Firefox (fur) | 139.0 | Mozilla Firefox (fur) 139.0 | May 27, 2025 |
| Mozilla Firefox (fy-NL) | 139.0 | Mozilla Firefox (fy-NL) 139.0 | May 27, 2025 |
| Mozilla Firefox (ga-IE) | 139.0 | Mozilla Firefox (ga-IE) 139.0 | May 27, 2025 |
| Mozilla Firefox (gd) | 139.0 | Mozilla Firefox (gd) 139.0 | May 27, 2025 |
| Mozilla Firefox (gl) | 139.0 | Mozilla Firefox (gl) 139.0 | May 27, 2025 |
| Mozilla Firefox (gn) | 139.0 | Mozilla Firefox (gn) 139.0 | May 27, 2025 |
| Mozilla Firefox (gu-IN) | 139.0 | Mozilla Firefox (gu-IN) 139.0 | May 27, 2025 |
| Mozilla Firefox (he) | 139.0 | Mozilla Firefox (he) 139.0 | May 27, 2025 |
| Mozilla Firefox (hi-IN) | 139.0 | Mozilla Firefox (hi-IN) 139.0 | May 27, 2025 |
| Mozilla Firefox (hr) | 139.0 | Mozilla Firefox (hr) 139.0 | May 27, 2025 |
| Mozilla Firefox (hsb) | 139.0 | Mozilla Firefox (hsb) 139.0 | May 27, 2025 |
| Mozilla Firefox (hu) | 139.0 | Mozilla Firefox (hu) 139.0 | May 27, 2025 |
| Mozilla Firefox (hy-AM) | 139.0 | Mozilla Firefox (hy-AM) 139.0 | May 27, 2025 |
| Mozilla Firefox (ia) | 139.0 | Mozilla Firefox (ia) 139.0 | May 27, 2025 |
| Mozilla Firefox (id) | 139.0 | Mozilla Firefox (id) 139.0 | May 27, 2025 |
| Mozilla Firefox (is) | 139.0 | Mozilla Firefox (is) 139.0 | May 27, 2025 |
| Mozilla Firefox (it) | 139.0 | Mozilla Firefox (it) 139.0 | May 27, 2025 |
| Mozilla Firefox (ja) | 139.0 | Mozilla Firefox (ja) 139.0 | May 27, 2025 |
| Mozilla Firefox (ka) | 139.0 | Mozilla Firefox (ka) 139.0 | May 27, 2025 |
| Mozilla Firefox (kab) | 139.0 | Mozilla Firefox (kab) 139.0 | May 27, 2025 |
| Mozilla Firefox (kk) | 139.0 | Mozilla Firefox (kk) 139.0 | May 27, 2025 |
| Mozilla Firefox (km) | 139.0 | Mozilla Firefox (km) 139.0 | May 27, 2025 |
| Mozilla Firefox (kn) | 139.0 | Mozilla Firefox (kn) 139.0 | May 27, 2025 |
| Mozilla Firefox (ko) | 139.0 | Mozilla Firefox (ko) 139.0 | May 27, 2025 |
| Mozilla Firefox (lij) | 139.0 | Mozilla Firefox (lij) 139.0 | May 27, 2025 |
| Mozilla Firefox (lt) | 139.0 | Mozilla Firefox (lt) 139.0 | May 27, 2025 |
| Mozilla Firefox (lv) | 139.0 | Mozilla Firefox (lv) 139.0 | May 27, 2025 |
| Mozilla Firefox (mk) | 139.0 | Mozilla Firefox (mk) 139.0 | May 27, 2025 |
| Mozilla Firefox (mr) | 139.0 | Mozilla Firefox (mr) 139.0 | May 27, 2025 |
| Mozilla Firefox (ms) | 139.0 | Mozilla Firefox (ms) 139.0 | May 27, 2025 |
| Mozilla Firefox (my) | 139.0 | Mozilla Firefox (my) 139.0 | May 27, 2025 |
| Mozilla Firefox (nb-NO) | 139.0 | Mozilla Firefox (nb-NO) 139.0 | May 27, 2025 |
| Mozilla Firefox (ne-NP) | 139.0 | Mozilla Firefox (ne-NP) 139.0 | May 27, 2025 |
| Mozilla Firefox (nl) | 139.0 | Mozilla Firefox (nl) 139.0 | May 27, 2025 |
| Mozilla Firefox (nn-NO) | 139.0 | Mozilla Firefox (nn-NO) 139.0 | May 27, 2025 |
| Mozilla Firefox (oc) | 139.0 | Mozilla Firefox (oc) 139.0 | May 27, 2025 |
| Mozilla Firefox (pa-IN) | 139.0 | Mozilla Firefox (pa-IN) 139.0 | May 27, 2025 |
| Mozilla Firefox (pl) | 139.0 | Mozilla Firefox (pl) 139.0 | May 27, 2025 |
| Mozilla Firefox (pt-BR) | 139.0 | Mozilla Firefox (pt-BR) 139.0 | May 27, 2025 |
| Mozilla Firefox (pt-PT) | 139.0 | Mozilla Firefox (pt-PT) 139.0 | May 27, 2025 |
| Mozilla Firefox (rm) | 139.0 | Mozilla Firefox (rm) 139.0 | May 27, 2025 |
| Mozilla Firefox (ro) | 139.0 | Mozilla Firefox (ro) 139.0 | May 27, 2025 |
| Mozilla Firefox (ru) | 139.0 | Mozilla Firefox (ru) 139.0 | May 27, 2025 |
| Mozilla Firefox (sc) | 139.0 | Mozilla Firefox (sc) 139.0 | May 27, 2025 |
| Mozilla Firefox (sco) | 139.0 | Mozilla Firefox (sco) 139.0 | May 27, 2025 |
| Mozilla Firefox (si) | 139.0 | Mozilla Firefox (si) 139.0 | May 27, 2025 |
| Mozilla Firefox (sk) | 139.0 | Mozilla Firefox (sk) 139.0 | May 27, 2025 |
| Mozilla Firefox (sl) | 139.0 | Mozilla Firefox (sl) 139.0 | May 27, 2025 |
| Mozilla Firefox (son) | 139.0 | Mozilla Firefox (son) 139.0 | May 27, 2025 |
| Mozilla Firefox (sq) | 139.0 | Mozilla Firefox (sq) 139.0 | May 27, 2025 |
| Mozilla Firefox (sr) | 139.0 | Mozilla Firefox (sr) 139.0 | May 27, 2025 |
| Mozilla Firefox (sv-SE) | 139.0 | Mozilla Firefox (sv-SE) 139.0 | May 27, 2025 |
| Mozilla Firefox (szl) | 139.0 | Mozilla Firefox (szl) 139.0 | May 27, 2025 |
| Mozilla Firefox (ta) | 139.0 | Mozilla Firefox (ta) 139.0 | May 27, 2025 |
| Mozilla Firefox (te) | 139.0 | Mozilla Firefox (te) 139.0 | May 27, 2025 |
| Mozilla Firefox (tg) | 139.0 | Mozilla Firefox (tg) 139.0 | May 27, 2025 |
| Mozilla Firefox (th) | 139.0 | Mozilla Firefox (th) 139.0 | May 27, 2025 |
| Mozilla Firefox (tl) | 139.0 | Mozilla Firefox (tl) 139.0 | May 27, 2025 |
| Mozilla Firefox (tr) | 139.0 | Mozilla Firefox (tr) 139.0 | May 27, 2025 |
| Mozilla Firefox (trs) | 139.0 | Mozilla Firefox (trs) 139.0 | May 27, 2025 |
| Mozilla Firefox (uk) | 139.0 | Mozilla Firefox (uk) 139.0 | May 27, 2025 |
| Mozilla Firefox (ur) | 139.0 | Mozilla Firefox (ur) 139.0 | May 27, 2025 |
| Mozilla Firefox (uz) | 139.0 | Mozilla Firefox (uz) 139.0 | May 27, 2025 |
| Mozilla Firefox (vi) | 139.0 | Mozilla Firefox (vi) 139.0 | May 27, 2025 |
| Mozilla Firefox (xh) | 139.0 | Mozilla Firefox (xh) 139.0 | May 27, 2025 |
| Mozilla Firefox (zh-CN) | 139.0 | Mozilla Firefox (zh-CN) 139.0 | May 27, 2025 |
| Mozilla Firefox (zh-TW) | 139.0 | Mozilla Firefox (zh-TW) 139.0 | May 27, 2025 |
| Mozilla Firefox ESR (ach) | 140.3.0 | Mozilla Firefox ESR (ach) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (af) | 140.3.0 | Mozilla Firefox ESR (af) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (an) | 140.3.0 | Mozilla Firefox ESR (an) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (ar) | 140.3.0 | Mozilla Firefox ESR (ar) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (ast) | 140.3.0 | Mozilla Firefox ESR (ast) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (az) | 140.3.0 | Mozilla Firefox ESR (az) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (be) | 140.3.0 | Mozilla Firefox ESR (be) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (bg) | 140.3.0 | Mozilla Firefox ESR (bg) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (bn) | 140.3.0 | Mozilla Firefox ESR (bn) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (br) | 140.3.0 | Mozilla Firefox ESR (br) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (bs) | 140.3.0 | Mozilla Firefox ESR (bs) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (ca) | 140.3.0 | Mozilla Firefox ESR (ca) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (ca-valencia) | 140.3.0 | Mozilla Firefox ESR (ca-valencia) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (cak) | 140.3.0 | Mozilla Firefox ESR (cak) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (cs) | 140.3.0 | Mozilla Firefox ESR (cs) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (cy) | 140.3.0 | Mozilla Firefox ESR (cy) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (da) | 140.3.0 | Mozilla Firefox ESR (da) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (de) | 140.3.0 | Mozilla Firefox ESR (de) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (dsb) | 140.3.0 | Mozilla Firefox ESR (dsb) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (el) | 140.3.0 | Mozilla Firefox ESR (el) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (en-CA) | 140.3.0 | Mozilla Firefox ESR (en-CA) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (en-GB) | 140.3.0 | Mozilla Firefox ESR (en-GB) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (en-US) | 140.3.0 | Mozilla Firefox ESR (en-US) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (eo) | 140.3.0 | Mozilla Firefox ESR (eo) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (es-AR) | 140.3.0 | Mozilla Firefox ESR (es-AR) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (es-CL) | 140.3.0 | Mozilla Firefox ESR (es-CL) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (es-ES) | 140.3.0 | Mozilla Firefox ESR (es-ES) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (es-MX) | 140.3.0 | Mozilla Firefox ESR (es-MX) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (et) | 140.3.0 | Mozilla Firefox ESR (et) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (eu) | 140.3.0 | Mozilla Firefox ESR (eu) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (fa) | 140.3.0 | Mozilla Firefox ESR (fa) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (ff) | 140.3.0 | Mozilla Firefox ESR (ff) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (fi) | 140.3.0 | Mozilla Firefox ESR (fi) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (fr) | 140.3.0 | Mozilla Firefox ESR (fr) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (fur) | 140.3.0 | Mozilla Firefox ESR (fur) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (fy-NL) | 140.3.0 | Mozilla Firefox ESR (fy-NL) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (ga-IE) | 140.3.0 | Mozilla Firefox ESR (ga-IE) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (gd) | 140.3.0 | Mozilla Firefox ESR (gd) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (gl) | 140.3.0 | Mozilla Firefox ESR (gl) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (gn) | 140.3.0 | Mozilla Firefox ESR (gn) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (gu-IN) | 140.3.0 | Mozilla Firefox ESR (gu-IN) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (he) | 140.3.0 | Mozilla Firefox ESR (he) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (hi-IN) | 140.3.0 | Mozilla Firefox ESR (hi-IN) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (hr) | 140.3.0 | Mozilla Firefox ESR (hr) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (hsb) | 140.3.0 | Mozilla Firefox ESR (hsb) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (hu) | 140.3.0 | Mozilla Firefox ESR (hu) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (hy-AM) | 140.3.0 | Mozilla Firefox ESR (hy-AM) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (ia) | 140.3.0 | Mozilla Firefox ESR (ia) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (id) | 140.3.0 | Mozilla Firefox ESR (id) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (is) | 140.3.0 | Mozilla Firefox ESR (is) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (it) | 140.3.0 | Mozilla Firefox ESR (it) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (ja) | 140.3.0 | Mozilla Firefox ESR (ja) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (ka) | 140.3.0 | Mozilla Firefox ESR (ka) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (kab) | 140.3.0 | Mozilla Firefox ESR (kab) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (kk) | 140.3.0 | Mozilla Firefox ESR (kk) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (km) | 140.3.0 | Mozilla Firefox ESR (km) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (kn) | 140.3.0 | Mozilla Firefox ESR (kn) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (ko) | 140.3.0 | Mozilla Firefox ESR (ko) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (lij) | 140.3.0 | Mozilla Firefox ESR (lij) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (lt) | 140.3.0 | Mozilla Firefox ESR (lt) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (lv) | 140.3.0 | Mozilla Firefox ESR (lv) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (mk) | 140.3.0 | Mozilla Firefox ESR (mk) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (mr) | 140.3.0 | Mozilla Firefox ESR (mr) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (ms) | 140.3.0 | Mozilla Firefox ESR (ms) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (my) | 140.3.0 | Mozilla Firefox ESR (my) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (nb-NO) | 140.3.0 | Mozilla Firefox ESR (nb-NO) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (ne-NP) | 140.3.0 | Mozilla Firefox ESR (ne-NP) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (nl) | 140.3.0 | Mozilla Firefox ESR (nl) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (nn-NO) | 140.3.0 | Mozilla Firefox ESR (nn-NO) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (oc) | 140.3.0 | Mozilla Firefox ESR (oc) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (pa-IN) | 140.3.0 | Mozilla Firefox ESR (pa-IN) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (pl) | 140.3.0 | Mozilla Firefox ESR (pl) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (pt-BR) | 140.3.0 | Mozilla Firefox ESR (pt-BR) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (pt-PT) | 140.3.0 | Mozilla Firefox ESR (pt-PT) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (rm) | 140.3.0 | Mozilla Firefox ESR (rm) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (ro) | 140.3.0 | Mozilla Firefox ESR (ro) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (ru) | 140.3.0 | Mozilla Firefox ESR (ru) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (sat) | 140.13.0 | Mozilla Firefox ESR (sat) 140.13.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (sc) | 140.3.0 | Mozilla Firefox ESR (sc) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (sco) | 140.3.0 | Mozilla Firefox ESR (sco) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (si) | 140.3.0 | Mozilla Firefox ESR (si) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (sk) | 140.3.0 | Mozilla Firefox ESR (sk) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (sl) | 140.3.0 | Mozilla Firefox ESR (sl) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (son) | 140.3.0 | Mozilla Firefox ESR (son) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (sq) | 140.3.0 | Mozilla Firefox ESR (sq) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (sr) | 140.3.0 | Mozilla Firefox ESR (sr) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (sv-SE) | 140.3.0 | Mozilla Firefox ESR (sv-SE) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (szl) | 140.3.0 | Mozilla Firefox ESR (szl) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (ta) | 140.3.0 | Mozilla Firefox ESR (ta) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (te) | 140.3.0 | Mozilla Firefox ESR (te) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (tg) | 140.3.0 | Mozilla Firefox ESR (tg) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (th) | 140.3.0 | Mozilla Firefox ESR (th) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (tl) | 140.3.0 | Mozilla Firefox ESR (tl) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (tr) | 140.3.0 | Mozilla Firefox ESR (tr) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (trs) | 140.3.0 | Mozilla Firefox ESR (trs) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (uk) | 140.3.0 | Mozilla Firefox ESR (uk) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (ur) | 140.3.0 | Mozilla Firefox ESR (ur) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (uz) | 140.3.0 | Mozilla Firefox ESR (uz) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (vi) | 140.3.0 | Mozilla Firefox ESR (vi) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (xh) | 140.3.0 | Mozilla Firefox ESR (xh) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (zh-CN) | 140.3.0 | Mozilla Firefox ESR (zh-CN) 140.3.0 | Sep 16, 2025 |
| Mozilla Firefox ESR (zh-TW) | 140.3.0 | Mozilla Firefox ESR (zh-TW) 140.3.0 | Sep 16, 2025 |
| Linux | |||
| thunderbird · Ubuntu 22.04.1 LTS (jammy) | 1:140.7.1+build1-0ubuntu0.22.04.1 | thunderbird 1:140.7.1+build1-0ubuntu0.22.04.1 | Jan 28, 2026 |
| thunderbird-gnome-support · Ubuntu 22.04.1 LTS (jammy) | 1:140.7.1+build1-0ubuntu0.22.04.1 | thunderbird-gnome-support 1:140.7.1+build1-0ubuntu0.22.04.1 | Jan 28, 2026 |
| thunderbird-mozsymbols · Ubuntu 22.04.1 LTS (jammy) | 1:140.7.1+build1-0ubuntu0.22.04.1 | thunderbird-mozsymbols 1:140.7.1+build1-0ubuntu0.22.04.1 | Jan 28, 2026 |
| xul-ext-calendar-timezones · Ubuntu 22.04.1 LTS (jammy) | 1:140.7.1+build1-0ubuntu0.22.04.1 | xul-ext-calendar-timezones 1:140.7.1+build1-0ubuntu0.22.04.1 | Jan 28, 2026 |
| xul-ext-gdata-provider · Ubuntu 22.04.1 LTS (jammy) | 1:140.7.1+build1-0ubuntu0.22.04.1 | xul-ext-gdata-provider 1:140.7.1+build1-0ubuntu0.22.04.1 | Jan 28, 2026 |
| xul-ext-lightning · Ubuntu 22.04.1 LTS (jammy) | 1:140.7.1+build1-0ubuntu0.22.04.1 | xul-ext-lightning 1:140.7.1+build1-0ubuntu0.22.04.1 | Jan 28, 2026 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.