mozilla Vulnerability Advisory Catalog

Total 3,294 security vulnerabilities recorded for mozilla software and firmware.

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CVE-2026-6762 MEDIUM
Component: firefox

Spoofing issue in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150...

📅 2026-04-21
CVSS 6.3 Dossier →
Component: firefox

Privilege escalation in the Networking component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 14...

📅 2026-04-21
CVSS 8.8 Dossier →
CVE-2026-6760 CRITICAL
Component: firefox

Mitigation bypass in the Networking: Cookies component. This vulnerability was fixed in Firefox 150 and Thunderbird 150....

📅 2026-04-21
CVSS 9.8 Dossier →
Component: firefox

Use-after-free in the Widget: Cocoa component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.1...

📅 2026-04-21
CVSS 7.5 Dossier →
Component: firefox

Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 150 and Thunderbird 150....

📅 2026-04-21
CVSS 7.5 Dossier →
CVE-2026-6757 MEDIUM
Component: firefox

Invalid pointer in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunde...

📅 2026-04-21
CVSS 6.3 Dossier →
Component: firefox

Mitigation bypass in Firefox for Android. This vulnerability was fixed in Firefox 150....

📅 2026-04-21
CVSS 7.5 Dossier →
CVE-2026-6755 MEDIUM
Component: firefox

Mitigation bypass in the DOM: postMessage component. This vulnerability was fixed in Firefox 150 and Thunderbird 150....

📅 2026-04-21
CVSS 6.5 Dossier →
Component: firefox

Use-after-free in the JavaScript Engine component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 15...

📅 2026-04-21
CVSS 7.5 Dossier →
Component: firefox

Incorrect boundary conditions in the WebRTC component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbi...

📅 2026-04-21
CVSS 7.3 Dossier →
Component: firefox

Incorrect boundary conditions in the WebRTC component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbir...

📅 2026-04-21
CVSS 7.3 Dossier →
Component: firefox

Uninitialized memory in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and T...

📅 2026-04-21
CVSS 7.3 Dossier →
Component: firefox

Privilege escalation in the Graphics: WebRender component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunde...

📅 2026-04-21
CVSS 8.8 Dossier →
Component: firefox

Information disclosure due to uninitialized memory in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.3...

📅 2026-04-21
CVSS 7.5 Dossier →
CVE-2026-6748 CRITICAL
Component: firefox

Uninitialized memory in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and T...

📅 2026-04-21
CVSS 9.8 Dossier →
Component: firefox

Use-after-free in the WebRTC component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10....

📅 2026-04-21
CVSS 7.5 Dossier →
Component: firefox

Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150...

📅 2026-04-21
CVSS 7.5 Dossier →
CVE-2026-6654 MEDIUM
Component: thin-vec

Double-Free / Use-After-Free (UAF) in the `IntoIter::drop` and `ThinVec::clear` functions in the thin_vec crate. A panic in `ptr::drop_in_place` skips...

📅 2026-04-20
CVSS 5.1 Dossier →
CVE-2026-5735 CRITICAL
Component: firefox

Memory safety bugs present in Firefox 149.0.1 and Thunderbird 149.0.1. Some of these bugs showed evidence of memory corruption and we presume that wit...

📅 2026-04-07
CVSS 9.8 Dossier →
CVE-2026-5734 CRITICAL
Component: firefox

Memory safety bugs present in Firefox ESR 140.9.0, Thunderbird ESR 140.9.0, Firefox 149.0.1 and Thunderbird 149.0.1. Some of these bugs showed evidenc...

📅 2026-04-07
CVSS 9.8 Dossier →
Component: firefox

Incorrect boundary conditions in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 149.0.2 and Thunderbird 149.0.2....

📅 2026-04-07
CVSS 8.8 Dossier →
Component: firefox

Incorrect boundary conditions, integer overflow in the Graphics: Text component. This vulnerability was fixed in Firefox 149.0.2, Firefox ESR 140.9.1,...

📅 2026-04-07
CVSS 8.8 Dossier →
CVE-2026-5731 CRITICAL
Component: firefox

Memory safety bugs present in Firefox ESR 115.34.0, Firefox ESR 140.9.0, Thunderbird ESR 140.9.0, Firefox 149.0.1 and Thunderbird 149.0.1. Some of the...

📅 2026-04-07
CVSS 9.8 Dossier →
Component: thunderbird

A malicious mail server could send malformed strings with negative lengths, causing the parser to read memory outside the buffer. If a mail server or ...

📅 2026-03-24
CVSS 7.4 Dossier →
Page 9 of 138 (3,294 Total Records)