CVE-2009-4630

Mo zilla Necko (Firefox, SeaMonkey and related apps) exposes a DNS prefetching flaw where domain names in links in local HTML are resolved, enabling remote observers to log DNS requests and infer user network location. Root cause: prefetching by the Necko DNS resolver. Impact: information disclos...

CVE-2025-4090

CVE-2025-4090 affects Thunderbird for Android and Firefox/Thunderbird before version 138 (Thunderbird <138; Firefox

CVE-2025-8036

CVE-2025-8036 : Affects Mozilla Firefox (prior to 141, ESR prior to 140.1) and Thunderbird (prior to 141, 140.1). Root cause is caching of CORS preflight responses across IP address changes, enabling bypass of same-origin policy via DNS rebinding. Connected sources corroborate a DNS-rebinding vec...

CVE-2026-6784

CVE-2026-6784 covers memory safety bugs in Mozilla Firefox 149 and Thunderbird 149 that could lead to memory corruption and, with sufficient effort, potentially arbitrary code execution. The vulnerability is evidenced across multiple feeds and is mitigated by upgrading to Firefox 150 and Thunderb...

CVE-2012-4218

CVE-2012-4218 involves a use-after-free in Mozilla Firefox’s BuildTextRunsScanner::BreakSink::SetBreaks, affecting Firefox < 17.0, Thunderbird < 17.0, and SeaMonkey

CVE-2017-5425

CVE-2017-5425 : The Gecko Media Plugin sandbox allowed access to local files via regex-matched paths. In OS X, this could expose data in subdirectories of “/private/var” for Firefox < 52 and Thunderbird

CVE-2025-3032

The CVE-2025-3032 entry describes a vulnerability in Firefox and Thunderbird where file descriptors leak from the fork server to web content processes, enabling privilege escalation. Affected products are Firefox and Thunderbird versions prior to 137. The root cause is the unintended propagation ...

CVE-2025-8040

CVE-2025-8040 corresponds to memory-safety bugs in Mozilla Firefox/Thunderbird products (Firefox/Thunderbird 140 line, ESR 140.0 and related versions) with evidence of memory corruption that could potentially lead to arbitrary code execution. Affected components are the Firefox and Thunderbird br...

CVE-2025-4086

CVE-2025-4086 affects Thunderbird for Android and Firefox/ Thunderbird versions earlier than 138. The issue is triggered by a filename containing a large number of encoded newline characters that can obscure the file extension in the download dialog, potentially misleading users about the downloa...

CVE-2025-8038

CVE-2025-8038 corresponds to a Mozilla framing/navigation vulnerability where Thunderbird ignored path checks when validating navigations in a frame. Affected products include Firefox before 141 and Firefox ESR before 140.1, and Thunderbird before 141 and before 140.1. Root cause per the sources ...

CVE-2025-4085

CVE-2025-4085 affects Mozilla Firefox (earlier than 138.0) and Mozilla Thunderbird (earlier than 138.0). The issue arises when a content process could abuse the privileged UITour actor to leak sensitive information or escalate privileges. The description consistently identifies the root cause as ...

CVE-2026-6754

CVE-2026-6754 is a memory-safety issue (Use-after-free) in the JavaScript Engine component that was fixed in Firefox 150 and related ESR branches, as well as Thunderbird 150/140.x lines. Public advisories confirm the flaw in the JavaScript engine leads to a potentially exploitable memory corrupti...

CVE-2026-8094

CVE-2026-8094 : A vulnerability in the WebRTC component reported in multiple feeds (CVE-2026-8094) affecting Mozilla Firefox ESR builds and Thunderbird. The available documents identify a WebRTC issue but do not provide detailed root cause, impacted products beyond Firefox ESR and Thunderbird, or...

CVE-2026-2781

CVE-2026-2781 is an integer overflow in the AES-GCM implementation of the Mozilla Network Security Service libraries (NSS) affecting Firefox/Thunderbird suites. Connected advisories confirm the NSS overflow can lead to memory safety concerns, with fixes delivered in Firefox 148 and corresponding ...

CVE-2026-0818

CVE-2026-0818 concerns Thunderbird where decrypting an inline OpenPGP message embedded in HTML/CSS could render in a context with outer email CSS, potentially enabling exfiltration of secret content if remote content is allowed. Affected versions: Thunderbird < 147.0.1 and Thunderbird

CVE-2026-6755

CVE-2026-6755 describes a mitigation bypass in the DOM: postMessage component. Affected products reference Mozilla Firefox and Thunderbird; the vulnerability was fixed in Firefox 150 and Thunderbird 150. The CVSSv3.1 base score is 6.5 (Network attack vector, Low attack complexity, Privileges requ...

CVE-2026-6779

CVE-2026-6779 refers to an “Other issue in the JavaScript Engine component” that affects Firefox and Thunderbird. The vulnerability was fixed in Firefox 150 and Thunderbird 150; Fedora advisories also call for updates to NSS and Firefox 150 across affected distros. The connected docs do not provi...

CVE-2026-7324

CVE-2026-7324 involves memory safety bugs in Firefox 150.0.0 and Thunderbird 150.0.0. Some bugs show evidence of memory corruption, with the description noting that, with sufficient effort, some could be exploited to run arbitrary code. The vulnerability was fixed in Firefox 150.0.1. The connecte...

CVE-2025-8044

CVE-2025-8044 corresponds to memory safety bugs found in Firefox 140 and Thunderbird 140, with memory corruption evidence and a potential to allow arbitrary code execution. Affected products are Firefox and Thunderbird versions earlier than 141. The consolidated sources indicate the issues are me...

CVE-2026-2796

CVE-2026-2796 describes a JIT miscompilation in the JavaScript: WebAssembly component that affects Firefox and Thunderbird prior to version 148. The root cause is a JIT miscompilation in the WebAssembly pathway within the JavaScript engine, leading to a high-severity impact (as reflected by the C...

CVE-2026-6748

CVE-2026-6748 concerns uninitialized memory in Mozilla’s Audio/Video: Web Codecs component. The Initial CVE page notes fixes in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10. Connected advisories from Debian (DSA-6225/DSA-6229) and DLA-4549/4546/NASL entries confirm mul...

CVE-2026-6765

CVE-2026-6765 affects Firefox and Thunderbird. The vulnerability is an information disclosure in the Form Autofill component. Root cause details are not provided beyond disclosure, but the issue is mitigated by fixes in Firefox 150 , Firefox ESR 140.10 , Thunderbird 150 , and Thunderbird 140.10 ....

CVE-2026-6776

CVE-2026-6776 is a boundary-condition vulnerability in the WebRTC: Networking component that affected Firefox/Thunderbird, fixed in Firefox 150 (and ESR 140.10) and Thunderbird 150 (and ESR 140.10). The explicit issue is an incorrect boundary handling in the WebRTC Networking path, with CVSSv3.1 ...

CVE-2026-6782

This CVE (CVE-2026-6782) affects the IP Protection component and is addressed by upgrading Firefox to version 150 and Thunderbird to version 150 (per multiple advisories). Public records in Fedora/Nessus notes indicate an information disclosure vulnerability resolved by these upgrades; no detaile...

CVE-2026-6758

CVE-2026-6758: Use-after-free in the JavaScript: WebAssembly component. Affected: Firefox and Thunderbird; fixed in Firefox 150 and Thunderbird 150. CVSS v3.1 base score 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). No explicit exploit details provided in the connected documents.

CVE-2026-12294

CVE-2026-12294 concerns a Sandbox escape in the DOM: Workers component found in Mozilla products. The vulnerability affects Firefox (including Firefox 152 and ESR branches 140.12 and 115.37) and Thunderbird (152 and 140.12). The underlying issue is a sandbox escape in the Workers component, with ...

CVE-2025-10527

The CVE-2025-10527 entry corresponds to a sandbox escape via use-after-free in the Graphics: Canvas2D component. Affected products include Firefox <143, Firefox ESR <140.3, Thunderbird <143, and Thunderbird

CVE-2026-12293

CVE-2026-12293 is a use-after-free in the Graphics: WebGPU component. The flaw is fixed in Firefox 152 and Thunderbird 152. Sources from NVD/Mozilla advisories confirm the issue and the patch versions; exploit details are not provided in the supplied documents. The vulnerability is classified wit...

CVE-2026-6761

CVE-2026-6761 — Privilege escalation in the Networking component (Microsoft/ Mozilla naming in documents shows Firefox/Thunderbird exposure). Affected products include Firefox (fixed in Firefox 150 and Firefox ESR 140.10) and Thunderbird (fixed in Thunderbird 150 and Thunderbird 140.10). The CVSS...

CVE-2025-10536

Mode C: CVE-2025-10536 is an Information disclosure in the Networking: Cache component affecting Firefox < 143, Firefox ESR < 140.3, Thunderbird < 143, and Thunderbird

CVE-2026-2758

CVE-2026-2758 is a memory-safety use-after-free in the Mozilla Firefox JavaScript GC component. Public details show it affects Firefox and Thunderbird families and was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8. Multiple connected advisorie...

CVE-2026-12311

CVE-2026-12311 is a information-disclosure and sandbox-escape issue in Mozilla’s Security: Sandbox/Process Sandboxing affecting Firefox and related components. The initial entry states impact as information disclosure with sandbox escape; connected advisories confirm affected products include Fir...

CVE-2026-6783

CVE-2026-6783 involves an incorrect boundary handling and integer overflow in the Audio/Video Playback component. Affected software is Mozilla Firefox and Thunderbird; the issue is mitigated by upgrading to Firefox 150 and Thunderbird 150, which include the fix. The CVSS-based reports indicate a ...

CVE-2026-6750

CVE-2026-6750 is a privilege-escalation in the Graphics: WebRender component affecting Mozilla Firefox/Firefox ESR and Thunderbird. The vulnerability is fixed in Firefox 150, Firefox ESR 115.35, and Firefox ESR 140.10 (with Thunderbird 150 and Thunderbird 140.10 also listed in the advisory set). ...

CVE-2026-6774

CVE-2026-6774 is a mitigation bypass in the DOM: Security component that affects Firefox and Thunderbird. The issue is described as a bypass of mitigation in the DOM security stack and was fixed in Firefox 150 and Thunderbird 150. The provided metadata indicates a CVSS v3.1 base score of 5.4 (Med...

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-2026-12295

CVE-2026-12295 describes a sandbox escape in the DOM: Navigation component affecting Mozilla Firefox and Thunderbird. The vulnerability is fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12. The entry lists a CVSS v3.1 base score of 9.6 (CRITICAL...

CVE-2026-12304

CVE-2026-12304 involves a Same-origin policy bypass in the Networking: Cookies component affecting Mozilla products. The vulnerability is documented for Firefox and Thunderbird (including firefox-esr and Thunderbird ESR variants) with fixes implemented in Firefox 152, Firefox ESR 140.12, Thunderb...

CVE-2026-2761

CVE-2026-2761 is a sandbox-escape vulnerability in the Graphics: WebRender component of Mozilla Firefox/Thunderbird. The issue is fixed in Firefox 148, Firefox ESR 115.33 and 140.8, as well as Thunderbird 148 and Thunderbird 140.8 per the provided advisories. Connected documents confirm this exac...

CVE-2026-2797

CVE-2026-2797 is a use-after-free in the JavaScript: GC component affecting Firefox and Thunderbird. The issue was fixed in Firefox 148 and Thunderbird 148. Public exploits are noted in some sources; CVSS metrics indicate a high-severity, memory-safety class vulnerability with network attack vect...

CVE-2025-10531

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

CVE-2026-12291

CVE-2026-12291 is a use‑after‑free defect in the Networking: HTTP component that affects Firefox and Thunderbird products. The vulnerability is fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12. The CVSS 3.1 base score is 8.8 (HIGH) with network...

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-2026-0877

CVE-2026-0877 is a mitigation bypass in the DOM: Security component, affecting Firefox versions below 147, including Firefox ESR <115.32 and ESR

CVE-2026-12297

CVE-2026-12297 describes a sandbox escape caused by incorrect boundary conditions in Mozilla Firefox/Thunderbird networking code. Affects Firefox and Thunderbird components; underlying fault is boundary-condition handling in the Networking component that allowed escape from the sandbox. Impact pe...

CVE-2026-2792

CVE-2026-2792 involves memory safety bugs found in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147. Some flaws showed memory corruption indicators and could potentially be exploited to run arbitrary code; Mozilla fixed these in Firefox 148, Firefox ESR 140.8, Thunderbird...

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-2025-10537

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-2025-8043

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

CVE-2025-10533

CVE-2025-10533 describes an integer overflow in the SVG component affecting Firefox before 143, Firefox ESR before 115.28 and 140.3, Thunderbird before 143 and 140.3. Connected sources confirm the same vulnerability details. The Astra Linux security bulletin echoes this issue and lists the affect...