CVE-2026-9308

CVE-2026-9308 affects Firefox for iOS Reader View. The issue occurs when HTML templates are processed before internal placeholders are replaced, allowing a malicious page to substitute a placeholder with JSON-LD data and potentially execute arbitrary JavaScript. The fix is in Firefox for iOS 151....

CVE-2011-3656

CVE-2011-3656 affects Mozilla Firefox up to version 3.6.24 and 4.x through 7, with a Cross-Site Scripting (XSS) flaw that allows remote attackers to inject arbitrary script or HTML via HTTP 0.9 error handling, non-default ports, and content-sniffing. The provided documents consistently describe t...

CVE-2026-0878

CVE-2026-0878 describes a sandbox escape caused by incorrect boundary conditions in the Graphics: CanvasWebGL component. Affected: Firefox < 147, Firefox ESR < 140.7, Thunderbird < 147, Thunderbird

CVE-2026-16379

Technical details for CVE-2026-16379 are not provided in the supplied documents. The initial entry mentions privilege escalation in the DOM Content Processes component and fixes in Firefox/Thunderbird versions, but lacks root cause, affected products, or remediation specifics.

CVE-2026-16389

CVE-2026-16389 affects the Libraries component of NSS. The root cause is described as incorrect boundary conditions that lead to an integer overflow. The vulnerability is rated high (CVSS v3.1 base score 9.8; CRITICAL; network attack vector, no privileges, no user interaction) and would impact sy...

CVE-2026-2778

CVE-2026-2778: Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component. Affected: Firefox (pre-148), Firefox ESR (pre-115.33/140.8); Thunderbird (pre-148, pre-140.8). Fixes: Firefox 148, ESR 115.33/140.8; Thunderbird 148/140.8. Practical impact: sandbox escape potent...

CVE-2026-6775

CVE-2026-6775: Affects the WebRTC component with incorrect boundary conditions. Urban/Thunderbird users should upgrade to Firefox 150 and Thunderbird 150 where the issue is fixed. The vulnerability entry specifies this CVE’s root cause and that remediation is through upgrading to the listed versi...

CVE-2026-8949

CVE-2026-8949 concerns an integer overflow in Firefox’s Widget: Win32 component. Affected software is Firefox 151 and Firefox ESR 140.11, which include the fix. The available documents do not specify explicit exploit details, impact scope beyond the overflow and version fixes, or whether active e...

CVE-2025-6428

The CVE-2025-6428 issue affects Firefox for Android only (other Firefox versions are not affected) and is triggered when a URL is provided in a link querystring parameter; the browser would navigate to that URL instead of the intended one, enabling phishing under certain conditions. Affected scop...

CVE-2026-2760

CVE-2026-2760 is a Firefox/Thunderbird Firefox Graphics: WebRender sandbox escape caused by incorrect boundary conditions. Multiple public advisories confirm the issue and that it is fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8. Affected comp...

CVE-2026-2774

CVE-2026-2774 is an integer overflow in the Firefox Audio/Video component. Public sources indicate Firefox/ESR updates (Firefox 148, ESR 115.33, ESR 140.8) fix the flaw; affected products include Firefox and Thunderbird per accompanying advisories. The issue is rated high/critical by CVSS sources...

CVE-2026-2780

CVE-2026-2780: Privilege escalation in the Netmonitor component of Firefox/Thunderbird. The vulnerability is fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8. Affected products include Firefox family and Thunderbird; root cause is in the Netmonitor component. Remedi...

CVE-2025-10531

CVE-2025-10531 : Affects Firefox < 143 and Thunderbird

CVE-2025-13027

CVE-2025-13027 is a memory-safety issue affecting Firefox and Thunderbird prior to version 145. The connected documents corroborate memory-corruption–related bugs in Firefox 144/Thunderbird 144, with the advisory noting potential arbitrary-code execution if exploited. Affected products include Fi...

CVE-2025-14327

CVE-2025-14327 is a spoofing vulnerability in the Downloads Panel component affecting Firefox < 146, Thunderbird < 146, Firefox ESR < 140.7, and Thunderbird

CVE-2026-16357

CVE-2026-16357 is a Mozilla Firefox/Firefox ESR vulnerability caused by incorrect boundary conditions in the Graphics component. Affected product: Firefox and Firefox ESR. The issue is tracked with a CVSS 3.1 base score of 9.8 (CRITICAL) with network attack vector, no user interaction, and possib...

CVE-2026-24869

CVE-2026-24869 documents a Use-after-free in Firefox’s Layout: Scrolling and Overflow component, affecting Firefox versions earlier than 147.0.2. The vulnerability is described in multiple sources as a use-after-free issue with potential impact to memory safety in that UI/layout area. Nessus/Free...

CVE-2026-2762

CVE-2026-2762 is an integer overflow in the JavaScript: Standard Library component that affects Firefox (non-ESR) and related Mozilla products. The issue is confirmed fixed in Firefox 148 and Firefox ESR 140.8, as well as Thunderbird 148 and Thunderbird 140.8. Connected advisories (Astra Linux bu...

CVE-2026-2779

CVE-2026-2779 covers incorrect boundary conditions in Networking: JAR within Firefox (and Firefox ESR). Public advisories indicate the issue affects Firefox before version 148 and Firefox ESR before 140.8, with Firefox 148/ESR 140.8 and Thunderbird updates mitigating it. The connected Amazon Linu...

CVE-2026-2782

CVE-2026-2782 affects Firefox (Netmonitor component) and is fixed in Firefox 148 and Firefox ESR 140.8, also addressed in Thunderbird 148/140.8. The connected sources corroborate privilege-escalation via Netmonitor across Mozilla products and note remediation as upgrading to Firefox 148+/Thunderb...

CVE-2026-2799

CVE-2026-2799 is a use-after-free vulnerability in the DOM: Core & HTML components of Mozilla Firefox and Thunderbird. The issue, identified across multiple advisories, is resolved in Firefox 148 and Thunderbird 148. Public exploit activity is noted in connected sources. Affected products include...

CVE-2026-8958

This CVE affects the Firefox Security: Process Sandboxing component and related Thunderbird variants, causing information disclosure and sandbox escape. The NVD/NVDC and CVE records state fixes in Firefox 151 and Firefox ESR 140.11, and in Thunderbird 151 and 140.11, addressing the underlying san...

CVE-2025-13013

CVE-2025-13013 is a mitigation-bypass in the DOM: Core & HTML component, affecting Firefox and Thunderbird up to certain pre‑145/ESR versions (Firefox <145, ESR <140.5, ESR

CVE-2025-14322

CVE-2025-14322: Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component. Affected software: Firefox versions before 146 and ESR before 115.31 and 140.6. The issue is described across multiple advisories (ALAS2023-2025-1337, ALAS2FIREFOX-2025-049, ALSA-2025:23128...

CVE-2026-16410

CVE-2026-16410: A JIT miscompilation in the JavaScript Engine's JIT component of Firefox was fixed in Firefox 153. Affected versions are prior to 153; use of the vulnerable JIT code could lead to high-severity impact per reported CVSS metrics (CRITICAL, HIGH confidentiality, integrity, availabili...

CVE-2026-4698

CVE-2026-4698 — JIT miscompilation in the JavaScript Engine (JIT component) . The issue is disclosed for Firefox/Thunderbird products and is described as a JIT miscompilation in the JavaScript engine’s JIT path. Affected versions are Firefox < 149, Firefox ESR < 115.34, and Firefox ESR

CVE-2026-8956

The CVE-2026-8956 issue is an integer overflow in the Networking: JAR component. Affected products include Firefox (includes Firefox 151 and Firefox ESR 140.11) and Thunderbird (incl. Thunderbird 151 and Thunderbird 140.11). The root cause is an integer overflow within the JAR networking module, ...

CVE-2025-10528

CVE-2025-10528 is a sandbox escape in Mozilla Firefox/Thunderbird caused by undefined behavior due to an invalid pointer in Graphics: Canvas2D. Affected products include Firefox < 143 and Firefox ESR < 140.3, Thunderbird < 143 and Thunderbird

CVE-2025-14324

CVE-2025-14324 describes a JIT miscompilation in the JavaScript Engine’s JIT component affecting Firefox < 146, Firefox ESR < 115.31 and < 140.6, and Thunderbird

CVE-2026-12328

CVE-2026-12328 pertains to memory safety bugs in Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird ESR 140.11, Firefox 151, and Thunderbird 151. Some bugs showed memory corruption and could potentially be exploited to run arbitrary code. Remediations are available: Firefox 152, Firefox ESR 140....

CVE-2026-16363

The CVE-2026-16363 entry describes a JIT miscompilation vulnerability in the JavaScript: WebAssembly component of Mozilla Firefox. Affected product is Firefox and Firefox ESR; the root cause is a miscompilation in the JavaScript/WebAssembly engine. The vulnerability is rated critical (CVSS v3.1: ...

CVE-2026-16372

CVE-2026-16372 — Privilege escalation in the DOM: Content Processes component. Affected products: Firefox and Thunderbird. The provided documents do not reveal the exact root cause or vulnerable files. CVSS 3.1 base score 8.8 (HIGH) with Network access, no privileges required, user interaction ne...

CVE-2026-24868

CVE-2026-24868 describes a mitigation bypass in Firefox’s Privacy: Anti-Tracking component, affecting Firefox versions earlier than 147.0.2. The vulnerability is tied to a bypass of mitigation controls in the Anti-Tracking module; no exploit vectors or root-cause details are provided in the suppl...

CVE-2026-8948

CVE-2026-8948: A same-origin policy bypass in the DOM: Networking component affecting Firefox and Thunderbird; fixed in Firefox 151 and Thunderbird 151. CVSS 3.1: 9.1 (CRITICAL), attack vector NETWORK, complexity LOW, no user interaction. No exploitation details provided in the documents. Remedia...

CVE-2025-10532

CVE-2025-10532 involves incorrect boundary conditions in the JavaScript: GC component affecting Firefox and Thunderbird products. Affected versions: Firefox and Thunderbird before 143, and ESR before 140.3. Connected advisories indicate fixes released as Firefox/Thunderbird updates (e.g., Firefox...

CVE-2025-8041

The CVE-2025-8041 entry concerns Mozilla Firefox for Android, where the address bar truncates URLs from the end instead of prioritizing the origin, allowing a security bypass in Firefox versions prior to 141. Affected product: Firefox for Android; vulnerable component: address bar URL rendering l...

CVE-2026-12327

CVE-2026-12327 relates to memory safety bugs in Mozilla products: Firefox ESR 140.11, Thunderbird ESR 140.11, Firefox 151, and Thunderbird 151. Some bugs showed evidence of memory corruption and could potentially be exploited to run arbitrary code. The issue was fixed in Firefox 152, Firefox ESR ...

CVE-2026-5734

CVE-2026-5734 involves memory safety bugs in Mozilla products. Affected: Firefox ESR 140.9.0, Thunderbird ESR 140.9.0, Firefox 149.0.1, and Thunderbird 149.0.1. Some bugs show memory corruption and could potentially be exploited to run arbitrary code. The issue is addressed by fixes in Firefox 14...

CVE-2026-8974

CVE-2026-8974 concerns memory-safety bugs in Thunderbird 140.10 and Thunderbird 150 that could enable arbitrary code execution; fixes are available in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11. Multiple vendor advisories (e.g., openSUSE SUSE 10813-1, Slackware advis...

CVE-2025-11711

The provided connected advisories confirm CVE-2025-11711 affects Firefox and Thunderbird across multiple versions (Firefox < 144, ESR < 140.4, Thunderbird < 144, ESR

CVE-2025-11712

The CVE-2025-11712 entry is supported by connected documents describing the same issue across Mozilla products. Affected software for this CVE includes Firefox and Thunderbird prior to version 144 (Firefox < 144, Firefox ESR < 140.4, Thunderbird < 144, Thunderbird

CVE-2025-8043

CVE-2025-8043 relates to Firefox and Thunderbird where URL truncation occurs toward the origin, with affected versions Firefox < 141 and Thunderbird

CVE-2026-12316

CVE-2026-12316 describes a mitigation bypass in the DOM: Security component that was fixed in Mozilla Firefox 152 and Thunderbird 152. The connected documents confirm that this is a software-level patch by Mozilla, addressing a DOM-related security bypass. The vulnerability details in the public ...

CVE-2026-2775

CVE-2026-2775 is a mitigation bypass in the DOM: HTML Parser component. The initial description states a fix in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8. Connected sources (Astra Linux bulletin and Amazon Linux advisories) reiterate the same mitig...

CVE-2026-2788

CVE-2026-2788 concerns incorrect boundary conditions in the Audio/Video: GMP component of Mozilla Firefox. Public advisories (e.g., Firefox/Firefox ESR updates in Firefox 148, ESR 115.33, ESR 140.8) and downstream Debian/AlmaLinux advisories confirm the fix was applied in those versions. Connecte...

CVE-2026-4692

This CVE (CVE-2026-4692) is a confirmed issue in the Responsive Design Mode component, leading to sandbox escape. The primary affected product is Mozilla Firefox (and related ESR builds) with versions prior to the fixed releases: Firefox 149, Firefox ESR 115.34, and Firefox ESR 140.9; Thunderbird...

CVE-2026-75874

A critical (CVSS 10.0) sandbox escape in Firefox and Thunderbird's Remote Settings Client component allows remote, unauthenticated attackers to break out of the application sandbox and achieve full system compromise. No exploitation has been reported, but the flaw affects any Firefox/Thunderbird ...

CVE-2025-10537

CVE-2025-10537 involves memory-safety bugs in Mozilla Firefox and Thunderbird (Firefox ESR 140.2/ Thunderbird ESR 140.2; Firefox 142/ Thunderbird 142) with potential to corrupt memory and, with enough effort, could allow arbitrary code execution. Affected: Firefox < 143, Firefox ESR < 140.3...

CVE-2025-14861

Firefox versions prior to 146.0.1 are affected by memory safety bugs (CVE-2025-14861) that can lead to memory corruption and, with enough effort, arbitrary code execution. The issue is fixed in Firefox 146.0.1; affected products include Firefox

CVE-2026-12308

CVE-2026-12308 is a memory-safety vulnerability affecting Mozilla Firefox and Thunderbird components. Connected advisories confirm the issue is fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12. Debian’s DSA-6350-1 lists CVE-2026-12308 among multiple Firefox ESR fi...