Mozilla Thunderbird vulnerabilities

CVE-2022-29911 [MEDIUM] CWE-1021 CVE-2022-29911: An improper implementation of the new iframe sandbox keyword <code>allow-top-navigation-by-user-acti An improper implementation of the new iframe sandbox keyword allow-top-navigation-by-user-activation could lead to script execution without allow-scripts being present. This vulnerability affects Thunderbird < 91.9, Firefox ESR < 91.9, and Firefox < 100.

CVE-2024-4768 [MEDIUM] CWE-281 CVE-2024-4768: A bug in popup notifications' interaction with WebAuthn made it easier for an attacker to trick a us A bug in popup notifications' interaction with WebAuthn made it easier for an attacker to trick a user into granting permissions. This vulnerability affects Firefox < 126, Firefox ESR < 115.11, and Thunderbird < 115.11.

CVE-2024-1549 [MEDIUM] CVE-2024-1549: If a website set a large custom cursor, portions of the cursor could have overlapped with the permis If a website set a large custom cursor, portions of the cursor could have overlapped with the permission dialog, potentially resulting in user confusion and unexpected granted permissions. This vulnerability affects Firefox < 123, Firefox ESR < 115.8, and Thunderbird < 115.8.

CVE-2024-11694 [MEDIUM] CWE-79 CVE-2024-11694: Enhanced Tracking Protection's Strict mode may have inadvertently allowed a CSP `frame-src` bypass a Enhanced Tracking Protection's Strict mode may have inadvertently allowed a CSP `frame-src` bypass and DOM-based XSS through the Google SafeFrame shim in the Web Compatibility extension. This issue could have exposed users to malicious frames masquerading as legitimate content. This vulnerability affects Firefox < 133, Firefox ESR < 128.5, Firefox ES

CVE-2025-13013 [MEDIUM] CVE-2025-13013: Mitigation bypass in the DOM: Core & HTML component Mitigation bypass in the DOM: Core & HTML component. This vulnerability affects Firefox < 145, Firefox ESR < 140.5, Firefox ESR < 115.30, Thunderbird < 145, and Thunderbird < 140.5.

CVE-2017-7825 [MEDIUM] CWE-20 CVE-2017-7825: Several fonts on OS X display some Tibetan and Arabic characters as whitespace. When used in the add Several fonts on OS X display some Tibetan and Arabic characters as whitespace. When used in the addressbar as part of an IDN this can be used for domain name spoofing attacks. Note: This attack only affects OS X operating systems. Other operating systems are unaffected. This vulnerability affects Firefox < 56, Firefox ESR < 52.4, and Thunderbird < 52.

CVE-2025-1015 [MEDIUM] CWE-79 CVE-2025-1015: The Thunderbird Address Book URI fields contained unsanitized links. This could be used by an attack The Thunderbird Address Book URI fields contained unsanitized links. This could be used by an attacker to create and export an address book containing a malicious payload in a field. For example, in the “Other” field of the Instant Messaging section. If another user imported the address book, clicking on the link could result in opening a web page insi

CVE-2020-6812 [MEDIUM] CWE-200 CVE-2020-6812: The first time AirPods are connected to an iPhone, they become named after the user's name by defaul The first time AirPods are connected to an iPhone, they become named after the user's name by default (e.g. Jane Doe's AirPods.) Websites with camera or microphone permission are able to enumerate device names, disclosing the user's name. To resolve this issue, Firefox added a special case that renames devices containing the substring 'AirPods' to sim

CVE-2012-0445 [MEDIUM] CWE-264 CVE-2012-0445: Mozilla Firefox 4.x through 9.0, Thunderbird 5.0 through 9.0, and SeaMonkey before 2.7 allow remote Mozilla Firefox 4.x through 9.0, Thunderbird 5.0 through 9.0, and SeaMonkey before 2.7 allow remote attackers to bypass the HTML5 frame-navigation policy and replace arbitrary sub-frames by creating a form submission target with a sub-frame's name attribute.

CVE-2008-5012 [MEDIUM] CWE-200 CVE-2008-5012: Mozilla Firefox 2.x before 2.0.0.18, Thunderbird 2.x before 2.0.0.18, and SeaMonkey 1.x before 1.1.1 Mozilla Firefox 2.x before 2.0.0.18, Thunderbird 2.x before 2.0.0.18, and SeaMonkey 1.x before 1.1.13 do not properly change the source URI when processing a canvas element and an HTTP redirect, which allows remote attackers to bypass the same origin policy and access arbitrary images that are not directly accessible to the attacker. NOTE: this issue

CVE-2024-2611 [MEDIUM] CVE-2024-2611: A missing delay on when pointer lock was used could have allowed a malicious page to trick a user in A missing delay on when pointer lock was used could have allowed a malicious page to trick a user into granting permissions. This vulnerability affects Firefox < 124, Firefox ESR < 115.9, and Thunderbird < 115.9.

CVE-2019-11761 [MEDIUM] CWE-362 CVE-2019-11761: By using a form with a data URI it was possible to gain access to the privileged JSONView object tha By using a form with a data URI it was possible to gain access to the privileged JSONView object that had been cloned into content. Impact from exposing this object appears to be minimal, however it was a bypass of existing defense in depth mechanisms. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.

CVE-2022-36059 [MEDIUM] CVE-2022-36059: matrix-js-sdk is a Matrix messaging protocol Client-Server SDK for JavaScript matrix-js-sdk is a Matrix messaging protocol Client-Server SDK for JavaScript. In versions prior to 19.4.0 events sent with special strings in key places can temporarily disrupt or impede the matrix-js-sdk from functioning properly, potentially impacting the consumer's ability to process data safely. Note that the matrix-js-sdk can appear to be operating normally but be excluding

CVE-2008-5512 [MEDIUM] CWE-264 CVE-2008-5512: Multiple unspecified vulnerabilities in Mozilla Firefox 3.x before 3.0.5 and 2.x before 2.0.0.19, Th Multiple unspecified vulnerabilities in Mozilla Firefox 3.x before 3.0.5 and 2.x before 2.0.0.19, Thunderbird 2.x before 2.0.0.19, and SeaMonkey 1.x before 1.1.14 allow remote attackers to run arbitrary JavaScript with chrome privileges via unknown vectors in which "page content can pollute XPCNativeWrappers."

CVE-2024-11696 [MEDIUM] CWE-347 CVE-2024-11696: The application failed to account for exceptions thrown by the `loadManifestFromFile` method during The application failed to account for exceptions thrown by the `loadManifestFromFile` method during add-on signature verification. This flaw, triggered by an invalid or unsupported extension manifest, could have caused runtime errors that disrupted the signature validation process. As a result, the enforcement of signature validation for unrelated ad

CVE-2023-4045 [MEDIUM] CVE-2023-4045: Offscreen Canvas did not properly track cross-origin tainting, which could have been used to access image data from another site in violation of same- Offscreen Canvas did not properly track cross-origin tainting, which could have been used to access image data from another site in violation of same-origin policy. This vulnerability affects Firefox < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1.

CVE-2026-12298 [MEDIUM] CWE-125 CVE-2026-12298: Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140 Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.

CVE-2026-6774 [MEDIUM] CWE-693 CVE-2026-6774: Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 150 and Th Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.

CVE-2026-8391 [MEDIUM] Mozilla Foundation Security Advisory 2026-51: CVE-2026-8391 Mozilla Foundation Security Advisory 2026-51 CVE: CVE-2026-8391 Product: Thunderbird Impact: high Fixed in: Thunderbird 140.11

CVE-2007-3734 [CRITICAL] CVE-2007-3734: Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 2.0.0.5 and Thu Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 2.0.0.5 and Thunderbird before 2.0.0.5 allow remote attackers to cause a denial of service (crash) via unspecified vectors that trigger memory corruption.