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Debian · Security advisory · October 27, 2026
Debian · Security advisory · October 27, 2026DEBIAN-CVE-2026-113867: thunderbird security update
DEBIAN-CVE-2026-113867, released October 27, 2026, fixes 1 CVE in thunderbird. None of them is reported as exploited. Patch Radar priority: Urgent.
Urgent
CVEs closed
1
1 rated Critical
Exploited
0
None reported
Highest CVSS
9.1
Base score, 0 to 10
Highest EPSS
0.0040
34th percentile
Fixed package versions
| Product | Release | Fixed in |
|---|---|---|
| thunderbird | Debian 12.15 (bookworm) | 1:153.5.1esr-1~deb12u1 |
| thunderbird | Debian 13.5 (trixie) | 1:153.5.1esr-1~deb13u1 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| Urgent | CVE-2026-113867 | thunderbird: Thunderbird did not escape attribute values when serializing outgoing XMPP stanzas | 9.1 | 0.0040 | None reported |
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