Mozilla Thunderbird vulnerabilities

CVE-2026-12302 [MEDIUM] CWE-693 CVE-2026-12302: Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 152, Firef Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.

CVE-2025-4088 [MEDIUM] CWE-352 CVE-2025-4088: A security vulnerability in Thunderbird allowed malicious sites to use redirects to send credentiale A security vulnerability in Thunderbird allowed malicious sites to use redirects to send credentialed requests to arbitrary endpoints on any site that had invoked the Storage Access API. This enabled potential Cross-Site Request Forgery attacks across origins. This vulnerability was fixed in Firefox 138 and Thunderbird 138.

CVE-2006-1733 [MEDIUM] CWE-264 CVE-2006-1733: Mozilla Firefox and Thunderbird 1.x before 1.5 and 1.0.x before 1.0.8, Mozilla Suite before 1.7.13, Mozilla Firefox and Thunderbird 1.x before 1.5 and 1.0.x before 1.0.8, Mozilla Suite before 1.7.13, and SeaMonkey before 1.0 does not properly protect the compilation scope of privileged built-in XBL bindings, which allows remote attackers to execute arbitrary code via the (1) valueOf.call or (2) valueOf.apply methods of an XBL binding, or (3) "by inse

CVE-2012-0461 [HIGH] CVE-2012-0461: Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 3.6.28 and 4.x Multiple unspecified vulnerabilities in the browser engine in 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 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly exe

CVE-2015-7198 [HIGH] CVE-2015-7198: Buffer overflow in the rx::TextureStorage11 class in ANGLE, as used in Mozilla Firefox before 42 Buffer overflow in the rx::TextureStorage11 class in ANGLE, as used in Mozilla Firefox before 42.0 and Firefox ESR 38.x before 38.4, allows remote attackers to cause a denial of service (memory corruption) or possibly have unspecified other impact via crafted texture data.

CVE-2015-2738 [CRITICAL] CWE-17 CVE-2015-2738: The YCbCrImageDataDeserializer::ToDataSourceSurface function in the YCbCr implementation in Mozilla The YCbCrImageDataDeserializer::ToDataSourceSurface function in the YCbCr implementation in Mozilla Firefox before 39.0, Firefox ESR 31.x before 31.8 and 38.x before 38.1, and Thunderbird before 38.1 reads data from uninitialized memory locations, which has unspecified impact and attack vectors.

CVE-2015-2734 [CRITICAL] CWE-17 CVE-2015-2734: The CairoTextureClientD3D9::BorrowDrawTarget function in the Direct3D 9 implementation in Mozilla Fi The CairoTextureClientD3D9::BorrowDrawTarget function in the Direct3D 9 implementation in Mozilla Firefox before 39.0, Firefox ESR 31.x before 31.8 and 38.x before 38.1, and Thunderbird before 38.1 reads data from uninitialized memory locations, which has unspecified impact and attack vectors.

CVE-2008-2806 [HIGH] CWE-20 CVE-2008-2806: Mozilla Firefox before 2.0.0.15 and SeaMonkey before 1.1.10 on Mac OS X allow remote attackers to by Mozilla Firefox before 2.0.0.15 and SeaMonkey before 1.1.10 on Mac OS X allow remote attackers to bypass the Same Origin Policy and create arbitrary socket connections via a crafted Java applet, related to the Java Embedding Plugin (JEP) and Java LiveConnect.

CVE-2017-5449 [HIGH] CWE-20 CVE-2017-5449: A possibly exploitable crash triggered during layout and manipulation of bidirectional unicode text A possibly exploitable crash triggered during layout and manipulation of bidirectional unicode text in concert with CSS animations. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 52.1, and Firefox < 53.

CVE-2017-5467 [HIGH] CWE-119 CVE-2017-5467: A potential memory corruption and crash when using Skia content when drawing content outside of the A potential memory corruption and crash when using Skia content when drawing content outside of the bounds of a clipping region. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 52.1, and Firefox < 53.

CVE-2008-2803 [MEDIUM] CWE-264 CVE-2008-2803: The mozIJSSubScriptLoader.LoadScript function in Mozilla Firefox before 2.0.0.15, Thunderbird 2.0.0. The mozIJSSubScriptLoader.LoadScript function in Mozilla Firefox before 2.0.0.15, Thunderbird 2.0.0.14 and earlier, and SeaMonkey before 1.1.10 does not apply XPCNativeWrappers to scripts loaded from (1) file: URIs, (2) data: URIs, or (3) certain non-canonical chrome: URIs, which allows remote attackers to execute arbitrary code via vectors involving

CVE-2006-2787 [CRITICAL] CVE-2006-2787: EvalInSandbox in Mozilla Firefox and Thunderbird before 1.5.0.4 allows remote attackers to gain priv EvalInSandbox in Mozilla Firefox and Thunderbird before 1.5.0.4 allows remote attackers to gain privileges via javascript that calls the valueOf method on objects that were created outside of the sandbox.

CVE-2020-15657 [HIGH] CWE-427 CVE-2020-15657: Firefox could be made to load attacker-supplied DLL files from the installation directory. This requ Firefox could be made to load attacker-supplied DLL files from the installation directory. This required an attacker that is already capable of placing files in the installation directory. *Note: This issue only affected Windows operating systems. Other operating systems are unaffected.*. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, an

CVE-2019-5798 [MEDIUM] CVE-2019-5798: Lack of correct bounds checking in Skia in Google Chrome prior to 73 Lack of correct bounds checking in Skia in Google Chrome prior to 73.0.3683.75 allowed a remote attacker to perform an out of bounds memory read via a crafted HTML page.

CVE-2010-2762 [MEDIUM] CWE-264 CVE-2010-2762: The XPCSafeJSObjectWrapper class in the SafeJSObjectWrapper (aka SJOW) implementation in Mozilla Fir The XPCSafeJSObjectWrapper class in the SafeJSObjectWrapper (aka SJOW) implementation in Mozilla Firefox 3.6.x before 3.6.9 and Thunderbird 3.1.x before 3.1.3 does not properly restrict objects at the end of scope chains, which allows remote attackers to execute arbitrary JavaScript code with chrome privileges via vectors related to a chrome privilege

CVE-2006-3807 [HIGH] CVE-2006-3807: Mozilla Firefox before 1.5.0.5, Thunderbird before 1.5.0.5, and SeaMonkey before 1.0.3 allows remote Mozilla Firefox before 1.5.0.5, Thunderbird before 1.5.0.5, and SeaMonkey before 1.0.3 allows remote attackers to execute arbitrary code via script that changes the standard Object() constructor to return a reference to a privileged object and calling "named JavaScript functions" that use the constructor.

CVE-2023-6209 [MEDIUM] CWE-22 CVE-2023-6209: Relative URLs starting with three slashes were incorrectly parsed, and a path-traversal "/../" part Relative URLs starting with three slashes were incorrectly parsed, and a path-traversal "/../" part in the path could be used to override the specified host. This could contribute to security problems in web sites. This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.

CVE-2008-5017 [CRITICAL] CWE-189 CVE-2008-5017: Integer overflow in xpcom/io/nsEscape.cpp in the browser engine in Mozilla Firefox 3.x before 3.0.4, Integer overflow in xpcom/io/nsEscape.cpp in the browser engine in Mozilla Firefox 3.x before 3.0.4, 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.

CVE-2025-4092 [MEDIUM] CWE-119 CVE-2025-4092: Memory safety bugs present in Firefox 137 and Thunderbird 137. Some of these bugs showed evidence of Memory safety bugs present in Firefox 137 and Thunderbird 137. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 138 and Thunderbird 138.

CVE-2025-3031 [MEDIUM] CWE-200 CVE-2025-3031: An attacker could read 32 bits of values spilled onto the stack in a JIT compiled function. This vul An attacker could read 32 bits of values spilled onto the stack in a JIT compiled function. This vulnerability was fixed in Firefox 137 and Thunderbird 137.