Firefox Developer Edition (en-US) 141.0
Firefox Developer Edition (en-US) 141.0, released July 11, 2025, fixes 24 CVEs in Firefox Developer Edition (en-US). None of them is reported as exploited. Patch Radar priority: Urgent. The latest Firefox Developer Edition (en-US) is 156.0, which also fixes every one of these CVEs.
Superseded. The latest Firefox Developer Edition (en-US) is 156.0, which also fixes every CVE on this page. Install that instead.
Priority of the 24 CVEs
Applies to
| Product | Version |
|---|---|
| Firefox Developer Edition (en-US) | 141.0 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| Urgent | CVE-2025-8044 | Memory safety bugs fixed in Firefox 141 and Thunderbird 141 | 9.8 | 0.0048 | None reported |
| Urgent | CVE-2025-8043 | Incorrect URL truncation | 9.8 | 0.0043 | None reported |
| Urgent | CVE-2026-16361 | Memory safety bugs fixed in Thunderbird ESR 140.13 | 9.8 | 0.0032 | None reported |
| High | CVE-2025-8028 | Large branch table could lead to truncated instruction | 9.8 | 0.0058 | None reported |
| High | CVE-2025-8031 | Incorrect URL stripping in CSP reports | 9.8 | 0.0051 | None reported |
| High | CVE-2026-8091 | Incorrect boundary conditions in the Audio/Video: Playback component | 9.8 | 0.0047 | None reported |
| High | CVE-2025-8034 | Memory safety bugs fixed in Firefox ESR 115.26, Firefox ESR 128.13, Thunderbird ESR 128.13, Firefox ESR 140.1, Thunderbird ESR 140.1, Firefox 141 and Thunderbird 141 | 8.8 | 0.0046 | None reported |
| High | CVE-2026-8094 | Other issue in the WebRTC component | 9.8 | 0.0045 | None reported |
| High | CVE-2025-8036 | DNS rebinding circumvents CORS | 8.1 | 0.0045 | None reported |
| High | CVE-2025-8027 | JavaScript engine only wrote partial return value to stack | 7.5 | 0.0043 | None reported |
| High | CVE-2025-8033 | Incorrect JavaScript state machine for generators | 7.5 | 0.0043 | None reported |
| High | CVE-2026-8092 | Memory safety bugs fixed in Thunderbird ESR 140.10.2 and Thunderbird 150.0.2 | 8.1 | 0.0041 | None reported |
| High | CVE-2025-8035 | Memory safety bugs fixed in Firefox ESR 128.13, Thunderbird ESR 128.13, Firefox ESR 140.1, Thunderbird ESR 140.1, Firefox 141 and Thunderbird 141 | 8.8 | 0.0040 | None reported |
| High | CVE-2025-8029 | javascript: URLs executed on object and embed tags | 8.1 | 0.0038 | None reported |
| High | CVE-2025-8030 | Potential user-assisted code execution in “Copy as cURL” command | 8.1 | 0.0038 | None reported |
| High | CVE-2025-8032 | XSLT documents could bypass CSP | 8.1 | 0.0038 | None reported |
| High | CVE-2025-8040 | Memory safety bugs fixed in Firefox ESR 140.1, Thunderbird ESR 140.1, Firefox 141 and Thunderbird 141 | 8.8 | 0.0037 | None reported |
| High | CVE-2025-8039 | Search terms persisted in URL bar | 8.1 | 0.0034 | None reported |
| High | CVE-2026-12329 | Memory safety bug fixed in Thunderbird ESR 140.12 | 7.5 | 0.0031 | None reported |
| High | CVE-2026-92021 | Use-after-free in the JavaScript Engine: JIT component | 8.8 | 0.0028 | None reported |
| High | CVE-2025-8038 | CSP frame-src was not correctly enforced for paths | 9.8 | 0.0027 | None reported |
| High | CVE-2025-8037 | Nameless cookies shadow secure cookies | 9.1 | 0.0027 | None reported |
| High | CVE-2026-92014 | Privilege escalation due to incorrect boundary conditions in the Graphics component | 8.8 | 0.0024 | None reported |
| High | CVE-2026-12330 | Incorrect boundary conditions in the Internationalization component | 7.5 | 0.0016 | None reported |
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