CVE-2025-26696

CVE-2025-26696 affects Mozilla Thunderbird and is triggered by certain crafted MIME messages that claim to contain an encrypted OpenPGP message but actually contain an OpenPGP signed message, causing the UI to mis-display the content as encrypted. Public references in connected documents corrobor...

CVE-2026-12289

CVE-2026-12289 describes a privilege-escalation vulnerability in the Graphics: WebRender component. The public description and connected advisories indicate this affects Mozilla Firefox and Thunderbird products, with fixes shipped in: Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbi...

CVE-2026-6749

CVE-2026-6749 is an information disclosure vulnerability in the Graphics: Canvas2D component, caused by uninitialized memory. It affects Firefox and Thunderbird products; Mozilla advisories state fixes in Firefox 150, Firefox ESR 115.35 and 140.10, and Thunderbird 150 and 140.10. Amazon Linux 2 a...

CVE-2006-2786

CVE-2006-2786 is an HTTP response smuggling vulnerability affecting Mozilla Firefox and Thunderbird prior to 1.5.0.4. According to connected advisories, an attacker could craft responses that a proxy or header formatting could fool the client into treating as responses from two different sites, p...

CVE-2006-3806

CVE-2006-3806 refers to multiple integer overflows in the JavaScript engine affecting Mozilla Firefox (pre-1.5.0.5), Thunderbird (pre-1.5.0.5), and SeaMonkey (pre-1.0.3). The primary issues involve long strings in Object/Array/String.toSource and related string function arguments, with the potent...

CVE-2007-4841

CVE-2007-4841 affects Mozilla Firefox (before 2.0.0.8), Mozilla Thunderbird (before 2.0.0.8), and SeaMonkey (before 1.1.5). The vulnerability permits remote command execution via (1) mailto, (2) nntp, (3) news, or (4) snews URIs that use invalid percent encoding, tied to improper file-type handli...

CVE-2008-1380

CVE-2008-1380 is described in the provided materials as a vulnerability in the processing of malformed JavaScript content that could crash the SeaMonkey web browser and potentially allow arbitrary code execution when JavaScript is enabled. Red Hat Oracle Linux advisories (e.g., RHSA-2008-0223, EL...

CVE-2009-1303

Affected products: Mozilla Firefox up to 3.0.8/3.0.9, Mozilla Thunderbird up to 2.0.0.21/22, and SeaMonkey up to 1.1.15/16. CVE-2009-1303 arises from nsSVGElement::BindToTree in the browser engine, allowing a remote attacker to trigger denial of service (application crash) and potentially memory ...

CVE-2011-0075

CVE-2011-0075 is an unspecified vulnerability in the Mozilla Firefox browser engine affecting Firefox 3.5.x before 3.5.19, Firefox 3.6.x before 3.6.17, Thunderbird before 3.1.10, and SeaMonkey before 2.0.14. The issue can cause a denial of service via memory corruption and application crash, with...

CVE-2011-2988

CVE-2011-2988 describes a buffer overrun in an unspecified string class used by the WebGL shader implementation in Mozilla Firefox (4.x–5), SeaMonkey (2.x before 2.3), and Thunderbird before 6. The vulnerability can be triggered by a long shader source block, potentially allowing remote code exec...

CVE-2011-3660

CVE-2011-3660 concernsMozilla Firefox 4.x–8.0, Thunderbird 5.0–8.0, and SeaMonkey before 2.6, where multiple vulnerabilities in the browser engine enable remote denial of service or possibly arbitrary code execution via vectors that trigger a compartment mismatch in nsDOMMessageEvent::GetData and...

CVE-2012-3962

CVE-2012-3962 affects Mozilla Firefox before 15.0, Firefox ESR before 10.0.7, Thunderbird before 15.0, Thunderbird ESR before 10.0.7, and SeaMonkey before 2.12. The issue is a failure to properly iterate through characters in a text run, enabling remote code execution via a crafted document. The ...

CVE-2012-3970

CVE-2012-3970 is a Use-After-Free in Mozilla Firefox’s nsTArray_base::Length function. Affects Firefox < 15.0, Firefox ESR < 10.0.7, Thunderbird < 15.0 (and ESR 10.x < 10.0.7), and SeaMonkey

CVE-2017-7757

CVE-2017-7757 is a use-after-free vulnerability in IndexedDB that can occur when an IndexedDB object is destroyed while a method on it is executing, potentially causing a crash. Affected products include Firefox versions before 54, Firefox ESR before 52.2, and Thunderbird before 52.2. The issue a...

CVE-2025-8027

CVE-2025-8027 describes a 64-bit value handling bug in the Firefox/Thunderbird JavaScript engines: on 64-bit platforms IonMonkey-JIT writes only 32 bits of a 64-bit return value to the stack, while Baseline-JIT reads all 64 bits. This can disclose or mishandle information in the return value spac...

CVE-2008-2811

The CVE-2008-2811 issue affects Mozilla components (Firefox <2.0.0.15, Thunderbird ≤2.0.0.14, SeaMonkey

CVE-2008-5500

CVE-2008-5500 affects Mozilla Firefox 3.x before 3.0.5 and Firefox 2.x before 2.0.0.19, Mozilla Thunderbird 2.x before 2.0.0.19, and SeaMonkey 1.x before 1.1.14. The vulnerability arises from the layout engine when processing malformed content, allowing a remote attacker to cause a denial of serv...

CVE-2008-5508

CVE-2008-5508 affects Mozilla Firefox (3.x prior to 3.0.5 and 2.x prior to 2.0.0.19), Mozilla Thunderbird (2.x prior to 2.0.0.19), and SeaMonkey (1.x prior to 1.1.14). The issue stems from improper parsing of URLs that start with leading whitespace or control characters, which can allow a remote ...

CVE-2009-1836

CVE-2009-1836: The vulnerability arises from how Mozilla Firefox (pre-3.0.11), Thunderbird (pre-2.0.0.22), and SeaMonkey (pre-1.1.17) use the HTTP Host header to determine the document context in a non-200 CONNECT response from a proxy. This can enable a man-in-the-middle attacker to modify the C...

CVE-2011-2378

CVE-2011-2378 affects Mozilla Firefox before 3.6.20, Thunderbird 3.x before 3.1.12, SeaMonkey 2.x (and possibly other products). The root cause is improper handling of DOM objects in appendChild, allowing remote attackers to execute arbitrary code via vectors leading to a dangling pointer. Impact...

CVE-2026-6767

CVE-2026-6767 is a vulnerability in the NSS Libraries component described as “Other issue in the Libraries component in NSS.” It is fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10. The CVSS v3.1 base score is 5.3 (attack vector: network, attac...

CVE-2026-6772

CVE-2026-6772 affects the NSS Libraries component, specifically an incorrect boundary condition in NSS Libraries. The vulnerability is exploitable via network access with no user interaction and no privileges required, with a CVSS v3.1 base score of 7.5 (High). Affected products/contexts include ...

CVE-2006-1727

CVE-2006-1727 affects Mozilla-derived browsers: Mozilla Firefox and Thunderbird 1.x before 1.5.0.2 and 1.0.x before 1.0.8, Mozilla Suite before 1.7.13, and SeaMonkey before 1.0.1. The issue allows remote attackers to gain chrome privileges through multiple attack vectors related to the use of XBL...

CVE-2006-3802

CVE-2006-3802 affects Mozilla Firefox before 1.5.0.5, Thunderbird before 1.5.0.5, and SeaMonkey before 1.0.3. The issue is that remote attackers can hijack native DOM methods from objects in another domain to conduct cross-site scripting (XSS) attacks using DOM methods of the top-level object. Th...

CVE-2006-6503

CVE-2006-6503: Affected Mozilla Firefox 2.x before 2.0.0.1, Mozilla Firefox 1.5.x before 1.5.0.9, Mozilla Thunderbird before 1.5.0.9, and SeaMonkey before 1.0.7. The issue allows bypassing cross-site scripting (XSS) protection by changing the src attribute of an IMG element to a javascript: URI. ...

CVE-2009-2462

CVE-2009-2462 affects Mozilla Firefox before 3.0.12 (and Thunderbird) with memory corruption/DoS or potentially arbitrary code execution via multiple rendering/DOM and CSS-related vectors. The connected MiracleLinux advisories reference Firefox 3.0.12 as the fixed version for AXSA:2009-364/365, i...

CVE-2009-3981

CVE-2009-3981 affects Mozilla Firefox before 3.0.16, SeaMonkey before 2.0.1, and Thunderbird. The issue is an unspecified remote vulnerability in the browser engine that can cause memory corruption, leading to a crash or potentially arbitrary code execution via unknown vectors, and can result in ...

CVE-2010-3769

CVE-2010-3769 affects Mozilla Firefox (pre-3.5.16 and pre-3.6.13 on Windows), Thunderbird (pre-3.0.11 and pre-3.1.7), and SeaMonkey (pre-2.0.11) due to a flaw in line-breaking when handling very long strings. The root cause is a buffer over-read triggered by a crafted document.write call, enablin...

CVE-2010-3777

CVE-2010-3777 is an unspecified vulnerability in Mozilla Firefox 3.6.x before 3.6.13 and Thunderbird 3.1.x before 3.1.7 that allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors. Connected advisories ...

CVE-2011-2605

CVE-2011-2605 is a CRLF-injection issue in Firefox/Thunderbird: nsCookieService::SetCookieStringInternal mishandles a newline in document.cookie, bypassing access restrictions. Affected: Mozilla Firefox before 3.6.18 and 4.x through 4.0.1; Thunderbird before 3.1.11. Outcome: potential cookie isol...

CVE-2011-2999

The CVE-2011-2999 issue affects Mozilla Firefox (pre-3.6.23 and 4.x–5), Thunderbird (pre-6.0), and SeaMonkey (pre-2.3) where a frame named location could shadow window.location, bypassing Same Origin Policy via a crafted site. This is a remote vulnerability with no explicit exploitation details i...

CVE-2012-5840

CVE-2012-5840 is a Use-after-free vulnerability in Mozilla Firefox’s nsTextEditorState::PrepareEditor, affecting Firefox prior to 17.0, Firefox ESR 10.x prior to 10.0.11, Thunderbird prior to 17.0, Thunderbird ESR 10.x prior to 10.0.11, and SeaMonkey prior to 2.14. The flaw allows remote attacker...

CVE-2017-7845

CVE-2017-7845 is a concrete vulnerability: a buffer overflow in ANGLE’s Direct3D 9 path used for WebGL rendering can crash the process. It affects Windows, and is listed against Thunderbird < 52.5.2, Firefox ESR < 52.5.2, and Firefox

CVE-2025-4092

The CVE-2025-4092 entry concerns memory safety bugs in Mozilla Firefox 137/Thunderbird 137 that reportedly could be exploited to execute arbitrary code. Affected products are Firefox and Thunderbird versions before 138. Root cause is memory safety/memory corruption in the browser components; Mozi...

CVE-2006-4565

CVE-2006-4565 is a vulnerability in Mozilla-related products (Firefox/SeaMonkey/Thunderbird) tied to processing of certain JavaScript regular expressions. The root cause is flaws in handling specific regular expressions, which could crash the application or allow arbitrary code execution. Public ...

CVE-2006-5747

CVE-2006-5747 affects Mozilla Firefox <=1.5.0.7/8, Thunderbird <=1.5.0.7/8, and SeaMonkey

CVE-2007-5339

CVE-2007-5339 is in Mozilla Firefox (pre-2.0.0.8), Mozilla Thunderbird (pre-2.0.0.8) and SeaMonkey (pre-1.1.5). The flaws arise from crafted HTML triggering memory corruption or assert errors, leading to remote denial of service (crash); some entries also indicate potential arbitrary code executi...

CVE-2008-5017

CVE-2008-5017 is an integer overflow in xpcom/io/nsEscape.cpp in the Mozilla browser engine. The vulnerability could allow a remote attacker to crash the affected application (DoS) via unspecified vectors in Mozilla Firefox 3.x prior to 3.0.4, Firefox 2.x prior to 2.0.0.18, Thunderbird 2.x prior ...

CVE-2008-5510

CVE-2008-5510 concerns the CSS parser in Mozilla Firefox (3.x up to 3.0.5 and 2.x up to 2.0.0.19), Thunderbird 2.x up to 2.0.0.19, and SeaMonkey 1.x up to 1.1.14, where the escaped null character (\0) is ignored, potentially allowing remote attackers to bypass sanitization protections. The descri...

CVE-2008-5513

CVE-2008-5513 affects Mozilla Firefox. The issue arises in the session-restore feature, where restoration of SessionStore data can bypass the Same Origin Policy, enabling content injection and cross-site scripting (XSS) via unknown vectors. Affected products/versions include Firefox 3.x prior to ...

CVE-2009-1305

CVE-2009-1305 is a vulnerability in the JavaScript engine of Mozilla Firefox (and affected Thunderbird/SeaMonkey) prior to version 3.0.9. It allows remote attackers to cause a denial of service (application crash) and potentially memory corruption via vectors involving JSOP_DEFVAR and properties ...

CVE-2010-0159

CVE-2010-0159 affects Mozilla-based browsers including Firefox 3.0.x (before 3.0.18) and 3.5.x (before 3.5.8), Thunderbird before 3.0.2, and SeaMonkey before 2.0.3. The vulnerability arises from memory-corruption in layout handling, specifically in nsBlockFrame::StealFrame and related vectors, al...

CVE-2011-2981

The CVE-2011-2981 issue affects Mozilla Firefox before 3.6.20, SeaMonkey 2.x, Thunderbird 3.x before 3.1.12, and related products. Root cause: the event-management implementation does not correctly choose the proper script context, allowing remote attackers to bypass the Same Origin Policy or run...

CVE-2014-1548

CVE-2014-1548 affects Mozilla Firefox and Mozilla Thunderbird browser engines prior to version 31.0. The issues are described as multiple unspecified vulnerabilities that could lead to memory corruption, application crash, or possibly remote arbitrary code execution via unknown vectors. The conne...

CVE-2025-14321

The CVE-2025-14321 entry documents a Use-after-free in the WebRTC: Signaling component affecting Firefox before 146 and Firefox ESR before 140.6, and Thunderbird before 146/140.6. Public advisories (ALAS and Debian S/DLA notes) indicate memory-safety/allocations issues are part of the Firefox/Thu...

CVE-2025-8030

CVE-2025-8030 is publicly known and tied to an insufficent escaping in the “Copy as cURL” feature that could lead to code execution. The connected Astra Linux and Amazon/Linux advisories confirm the issue affects Firefox and Thunderbird across multiple tracks (e.g., Firefox < 141, Firefox ESR ...

CVE-2026-16349

CVE-2026-16349 : Same-origin policy bypass in the DOM: Navigation component affects Mozilla Firefox and Firefox ESR. Root cause is a bypass vulnerability in the Navigation component that can impact confidentiality, integrity, and availability (CVSS v3.1: 9.8, high) with network attack vector and ...

CVE-2006-1731

CVE-2006-1731 affects Mozilla Firefox/Thunderbird 1.x and related Mozilla suites; the flaw lets a remote attacker trigger XSS by valueOf.call/valueOf.apply with no args, returning the Object prototype instead of the global window. Impact is cross-site scripting; vendors released fixes in Firefox/...

CVE-2006-2776

CVE-2006-2776 affects Mozilla Firefox and Thunderbird prior to 1.5.0.4. Privileged UI code calls content-defined setters on an object prototype, enabling remote code execution at higher privileges. Impact is remote code execution with web content privileges; mitigation is upgrading Firefox/Thunde...

CVE-2006-3805

CVE-2006-3805 affects Mozilla Firefox (before 1.5.0.5), Thunderbird (before 1.5.0.5), and SeaMonkey (before 1.0.3). The issue stems from the JavaScript engine: a garbage-collection path could delete a temporary object still in use, potentially allowing arbitrary code execution. Public advisories ...