Mozilla Firefox vulnerabilities

CVE-2023-23597 [MEDIUM] CWE-326 CVE-2023-23597: A compromised web child process could disable web security opening restrictions, leading to a new ch A compromised web child process could disable web security opening restrictions, leading to a new child process being spawned within the `file://` context. Given a reliable exploit primitive, this new process could be exploited again leading to arbitrary file read. This vulnerability affects Firefox < 109.

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.

CVE-2025-4086 [MEDIUM] CWE-451 CVE-2025-4086: A specially crafted filename containing a large number of encoded newline characters could obscure t A specially crafted filename containing a large number of encoded newline characters could obscure the file's extension when displayed in the download dialog. *This bug only affects Thunderbird for Android. Other versions of Thunderbird are unaffected.*. This vulnerability was fixed in Firefox 138 and Thunderbird 138.

CVE-2024-9391 [MEDIUM] CWE-290 CVE-2024-9391: A user who enables full-screen mode on a specially crafted web page could potentially be prevented f A user who enables full-screen mode on a specially crafted web page could potentially be prevented from exiting full screen mode. This may allow spoofing of other sites as the address bar is no longer visible. *This bug only affects Firefox Focus for Android. Other versions of Firefox are unaffected.* This vulnerability affects Firefox < 131.

CVE-2026-6755 [MEDIUM] CWE-352 CVE-2026-6755: Mitigation bypass in the DOM: postMessage component. This vulnerability was fixed in Firefox 150 and Mitigation bypass in the DOM: postMessage component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.

CVE-2026-12309 [MEDIUM] CWE-119 CVE-2026-12309: Memory safety bug fixed in Thunderbird 152. This vulnerability was fixed in Firefox 152, Firefox ESR Memory safety bug fixed in Thunderbird 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.

CVE-2026-6764 [MEDIUM] CWE-119 CVE-2026-6764: Incorrect boundary conditions in the DOM: Device Interfaces component. This vulnerability was fixed Incorrect boundary conditions in the DOM: Device Interfaces component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.

CVE-2013-5619 [HIGH] CWE-190 CVE-2013-5619: Multiple integer overflows in the binary-search implementation in SpiderMonkey in Mozilla Firefox be Multiple integer overflows in the binary-search implementation in SpiderMonkey in Mozilla Firefox before 26.0 and SeaMonkey before 2.23 might allow remote attackers to cause a denial of service (out-of-bounds array access) or possibly have unspecified other impact via crafted JavaScript code.

CVE-2026-8971 [MEDIUM] CWE-346 CVE-2026-8971: Same-origin policy bypass in the Networking: JAR component. This vulnerability was fixed in Firefox Same-origin policy bypass in the Networking: JAR component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.

CVE-2026-8706 [MEDIUM] CWE-200 CVE-2026-8706: Firefox for iOS hosted Reader mode on an unauthenticated local web server, allowing another applicat Firefox for iOS hosted Reader mode on an unauthenticated local web server, allowing another application on the same device to request arbitrary URLs and receive the response rendered with the signed-in user's cookies. This vulnerability was fixed in Firefox for iOS 151.0.

CVE-2025-14331 [MEDIUM] CWE-346 CVE-2025-14331: Same-origin policy bypass in the Request Handling component. This vulnerability was fixed in Firefox Same-origin policy bypass in the Request Handling component. This vulnerability was fixed in Firefox 146, Firefox ESR 115.31, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.

CVE-2015-0797 [MEDIUM] CVE-2015-0797: GStreamer before 1.4.5, as used in Mozilla Firefox before 38.0, Firefox ESR 31.x before 31.7, and Th GStreamer before 1.4.5, as used in Mozilla Firefox before 38.0, Firefox ESR 31.x before 31.7, and Thunderbird before 31.7 on Linux, allows remote attackers to cause a denial of service (buffer over-read and application crash) or possibly execute arbitrary code via crafted H.264 video data in an m4v file.

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-2015-7188 [HIGH] CWE-254 CVE-2015-7188: Mozilla Firefox before 42.0 and Firefox ESR 38.x before 38.4 allow remote attackers to bypass the Sa Mozilla Firefox before 42.0 and Firefox ESR 38.x before 38.4 allow remote attackers to bypass the Same Origin Policy for an IP address origin, and conduct cross-site scripting (XSS) attacks, by appending whitespace characters to an IP address string.

CVE-2010-1122 [CRITICAL] CVE-2010-1122: Unspecified vulnerability in Mozilla Firefox 3.5.x through 3.5.8 allows remote attackers to cause a Unspecified vulnerability in Mozilla Firefox 3.5.x through 3.5.8 allows remote attackers to cause a denial of service (memory corruption and application crash) and possibly have unknown other impact via vectors that might involve compressed data, a different vulnerability than CVE-2010-1028.

CVE-2015-2739 [CRITICAL] CWE-119 CVE-2015-2739: The ArrayBufferBuilder::append function in Mozilla Firefox before 39.0, Firefox ESR 31.x before 31.8 The ArrayBufferBuilder::append function in Mozilla Firefox before 39.0, Firefox ESR 31.x before 31.8 and 38.x before 38.1, and Thunderbird before 38.1 accesses unintended memory locations, which has unspecified impact and attack vectors.

CVE-2008-3198 [HIGH] CVE-2008-3198: Mozilla Firefox 3.x before 3.0.1 allows remote attackers to inject arbitrary web script into a chrom Mozilla Firefox 3.x before 3.0.1 allows remote attackers to inject arbitrary web script into a chrome document via unspecified vectors, as demonstrated by injection into a XUL error page. NOTE: this can be leveraged to execute arbitrary code using CVE-2008-2933.

CVE-2015-2737 [CRITICAL] CWE-17 CVE-2015-2737: The rx::d3d11::SetBufferData function in the Direct3D 11 implementation in Mozilla Firefox before 39 The rx::d3d11::SetBufferData function in the Direct3D 11 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-2006-5463 [HIGH] CVE-2006-5463: Unspecified vulnerability in Mozilla Firefox before 1.5.0.8, Thunderbird before 1.5.0.8, and SeaMonk Unspecified vulnerability in Mozilla Firefox before 1.5.0.8, Thunderbird before 1.5.0.8, and SeaMonkey before 1.0.6 allows remote attackers to execute arbitrary JavaScript bytecode via unspecified vectors involving modification of a Script object while it is executing.