Mozilla Thunderbird vulnerabilities

CVE-2026-8961 [MEDIUM] CWE-290 CVE-2026-8961: Spoofing issue in the Form Autofill component. This vulnerability was fixed in Firefox 151, Firefox Spoofing issue in the Form Autofill component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.

CVE-2008-5052 [CRITICAL] CWE-399 CVE-2008-5052: The AppendAttributeValue function in the JavaScript engine in Mozilla Firefox 2.x before 2.0.0.18, T The AppendAttributeValue function in the JavaScript engine in 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 allows remote attackers to cause a denial of service (crash) via unknown vectors that trigger memory corruption, as demonstrated by e4x/extensions/regress-410192.js.

CVE-2021-40529 [MEDIUM] CWE-327 CVE-2021-40529: The ElGamal implementation in Botan through 2.18.1, as used in Thunderbird and other products, allow The ElGamal implementation in Botan through 2.18.1, as used in Thunderbird and other products, allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime defined by the receiver's public key, the generator defined by the receiver's public key, and the sender's ephemeral exp

CVE-2015-7175 [HIGH] CVE-2015-7175: The XULContentSinkImpl::AddText function in Mozilla Firefox before 41 The XULContentSinkImpl::AddText function in Mozilla Firefox before 41.0 and Firefox ESR 38.x before 38.3 might allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly have unspecified other impact via unknown vectors, related to an "overflow."

CVE-2015-7174 [HIGH] CVE-2015-7174: The nsAttrAndChildArray::GrowBy function in Mozilla Firefox before 41 The nsAttrAndChildArray::GrowBy function in Mozilla Firefox before 41.0 and Firefox ESR 38.x before 38.3 might allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly have unspecified other impact via unknown vectors, related to an "overflow."

CVE-2015-4522 [HIGH] CVE-2015-4522: The nsUnicodeToUTF8::GetMaxLength function in Mozilla Firefox before 41 The nsUnicodeToUTF8::GetMaxLength function in Mozilla Firefox before 41.0 and Firefox ESR 38.x before 38.3 might allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly have unspecified other impact via unknown vectors, related to an "overflow."

CVE-2012-0454 [HIGH] CWE-399 CVE-2012-0454: Use-after-free vulnerability in Mozilla Firefox 4.x through 10.0, Firefox ESR 10.x before 10.0.3, Th Use-after-free vulnerability in Mozilla Firefox 4.x through 10.0, Firefox ESR 10.x before 10.0.3, Thunderbird 5.0 through 10.0, Thunderbird ESR 10.x before 10.0.3, and SeaMonkey before 2.8 on 32-bit Windows 7 platforms allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via vectors involving use of

CVE-2026-6757 [MEDIUM] CWE-824 CVE-2026-6757: Invalid pointer in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 15 Invalid pointer in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.

CVE-2015-7199 [HIGH] CVE-2015-7199: The (1) AddWeightedPathSegLists and (2) SVGPathSegListSMILType::Interpolate functions in Mozilla Firefox before 42 The (1) AddWeightedPathSegLists and (2) SVGPathSegListSMILType::Interpolate functions in Mozilla Firefox before 42.0 and Firefox ESR 38.x before 38.4 lack status checking, which allows remote attackers to cause a denial of service (memory corruption) or possibly have unspecified other impact via a crafted SVG document.

CVE-2021-38502 [MEDIUM] CVE-2021-38502: Thunderbird ignored the configuration to require STARTTLS security for an SMTP connection. A MITM co Thunderbird ignored the configuration to require STARTTLS security for an SMTP connection. A MITM could perform a downgrade attack to intercept transmitted messages, or could take control of the authenticated session to execute SMTP commands chosen by the MITM. If an unprotected authentication method was configured, the MITM could obtain the authentication

CVE-2006-3808 [HIGH] CVE-2006-3808: Mozilla Firefox before 1 Mozilla Firefox before 1.5.0.5 and SeaMonkey before 1.0.3 allows remote Proxy AutoConfig (PAC) servers to execute code with elevated privileges via a PAC script that sets the FindProxyForURL function to an eval method on a privileged object.

CVE-2006-6505 [MEDIUM] CVE-2006-6505: Multiple heap-based buffer overflows in Mozilla Thunderbird before 1.5.0.9 and SeaMonkey before 1.0. Multiple heap-based buffer overflows in Mozilla Thunderbird before 1.5.0.9 and SeaMonkey before 1.0.7 allow remote attackers to execute arbitrary code via (1) external message modies with long Content-Type headers or (2) long RFC2047-encoded (MIME non-ASCII) headers.

CVE-2015-7200 [HIGH] CVE-2015-7200: The CryptoKey interface implementation in Mozilla Firefox before 42 The CryptoKey interface implementation in Mozilla Firefox before 42.0 and Firefox ESR 38.x before 38.4 lacks status checking, which allows attackers to have an unspecified impact via vectors related to a cryptographic key.

CVE-2007-2867 [CRITICAL] CWE-119 CVE-2007-2867: Multiple vulnerabilities in the layout engine for Mozilla Firefox 1.5.x before 1.5.0.12 and 2.x befo Multiple vulnerabilities in the layout engine for Mozilla Firefox 1.5.x before 1.5.0.12 and 2.x before 2.0.0.4, Thunderbird 1.5.x before 1.5.0.12 and 2.x before 2.0.0.4, and SeaMonkey 1.0.9 and 1.1.2 allow remote attackers to cause a denial of service (crash) via vectors related to dangling pointers, heap corruption, signed/unsigned, and other issue

CVE-2010-3174 [CRITICAL] CVE-2010-3174: Unspecified vulnerability in the browser engine in Mozilla Firefox 3.5.x before 3.5.14, Thunderbird Unspecified vulnerability in the browser engine in Mozilla Firefox 3.5.x before 3.5.14, Thunderbird before 3.0.9, and SeaMonkey before 2.0.9 allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.

CVE-2012-0458 [MEDIUM] CWE-264 CVE-2012-0458: Mozilla Firefox before 3.6.28 and 4.x through 10.0, Firefox ESR 10.x before 10.0.3, Thunderbird befo Mozilla Firefox before 3.6.28 and 4.x through 10.0, Firefox ESR 10.x before 10.0.3, Thunderbird before 3.1.20 and 5.0 through 10.0, Thunderbird ESR 10.x before 10.0.3, and SeaMonkey before 2.8 do not properly restrict setting the home page through the dragging of a URL to the home button, which allows user-assisted remote attackers to execute arbitrar

CVE-2022-3155 [HIGH] CWE-276 CVE-2022-3155: When saving or opening an email attachment on macOS, Thunderbird did not set attribute com.apple.qua When saving or opening an email attachment on macOS, Thunderbird did not set attribute com.apple.quarantine on the received file. If the received file was an application and the user attempted to open it, then the application was started immediately without asking the user to confirm. This vulnerability affects Thunderbird < 102.3.

CVE-2012-3978 [MEDIUM] CWE-264 CVE-2012-3978: The nsLocation::CheckURL function in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Th The nsLocation::CheckURL function in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonkey before 2.12 does not properly follow the security model of the location object, which allows remote attackers to bypass intended content-loading restrictions or possibly have unspe

CVE-2006-3113 [HIGH] CVE-2006-3113: Mozilla Firefox 1.5 before 1.5.0.5, Thunderbird before 1.5.0.5, and SeaMonkey before 1.0.3 allows re Mozilla Firefox 1.5 before 1.5.0.5, Thunderbird before 1.5.0.5, and SeaMonkey before 1.0.3 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via simultaneous XPCOM events, which causes a timer object to be deleted in a way that triggers memory corruption.

CVE-2022-42930 [HIGH] CVE-2022-42930: If two Workers were simultaneously initializing their CacheStorage, a data race could have occurred in the `ThirdPartyUtil` component If two Workers were simultaneously initializing their CacheStorage, a data race could have occurred in the `ThirdPartyUtil` component. This vulnerability affects Firefox < 106.