Mozilla Firefox vulnerabilities

CVE-2026-92078 [MEDIUM] CWE-770 CVE-2026-92078: Denial-of-service in the Security component. This vulnerability was fixed in Firefox 156, Firefox ES Denial-of-service in the Security component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.

CVE-2005-1153 [HIGH] CVE-2005-1153: Firefox before 1.0.3 and Mozilla Suite before 1.7.7, when blocking a popup, allows remote attackers Firefox before 1.0.3 and Mozilla Suite before 1.7.7, when blocking a popup, allows remote attackers to execute arbitrary code via a javascript: URL that is executed when the user selects the "Show javascript" option.

CVE-2017-5384 [MEDIUM] CWE-200 CVE-2017-5384: Proxy Auto-Config (PAC) files can specify a JavaScript function called for all URL requests with the Proxy Auto-Config (PAC) files can specify a JavaScript function called for all URL requests with the full URL path which exposes more information than would be sent to the proxy itself in the case of HTTPS. Normally the Proxy Auto-Config file is specified by the user or machine owner and presumed to be non-malicious, but if a user has enabled Web Prox

CVE-2006-3809 [HIGH] CVE-2006-3809: Mozilla Firefox before 1.5.0.5, Thunderbird before 1.5.0.5, and SeaMonkey before 1.0.3 allows script Mozilla Firefox before 1.5.0.5, Thunderbird before 1.5.0.5, and SeaMonkey before 1.0.3 allows scripts with the UniversalBrowserRead privilege to gain UniversalXPConnect privileges and possibly execute code or obtain sensitive data by reading into a privileged context.

CVE-2024-9397 [MEDIUM] CWE-1021 CVE-2024-9397: A missing delay in directory upload UI could have made it possible for an attacker to trick a user i A missing delay in directory upload UI could have made it possible for an attacker to trick a user into granting permission via clickjacking. This vulnerability affects Firefox < 131, Firefox ESR < 128.3, Thunderbird < 128.3, and Thunderbird < 131.

CVE-2015-4507 [MEDIUM] CVE-2015-4507: The SavedStacks class in the JavaScript implementation in Mozilla Firefox before 41.0, when the Debu The SavedStacks class in the JavaScript implementation in Mozilla Firefox before 41.0, when the Debugger API is enabled, allows remote attackers to cause a denial of service (getSlotRef assertion failure and application exit) or possibly execute arbitrary code via a crafted web site.

CVE-2024-3859 [MEDIUM] CWE-125 CVE-2024-3859: On 32-bit versions there were integer-overflows that led to an out-of-bounds-read that potentially c On 32-bit versions there were integer-overflows that led to an out-of-bounds-read that potentially could be triggered by a malformed OpenType font. This vulnerability affects Firefox < 125, Firefox ESR < 115.10, and Thunderbird < 115.10.

CVE-2011-0071 [MEDIUM] CWE-22 CVE-2011-0071: Directory traversal vulnerability in Mozilla Firefox before 3.5.19 and 3.6.x before 3.6.17, Thunderb Directory traversal vulnerability in Mozilla Firefox before 3.5.19 and 3.6.x before 3.6.17, Thunderbird before 3.1.10, and SeaMonkey before 2.0.14 on Windows allows remote attackers to determine the existence of arbitrary files, and possibly load resources, via vectors involving a resource: URL.

CVE-2019-11727 [MEDIUM] CWE-295 CVE-2019-11727: A vulnerability exists where it possible to force Network Security Services (NSS) to sign Certificat A vulnerability exists where it possible to force Network Security Services (NSS) to sign CertificateVerify with PKCS#1 v1.5 signatures when those are the only ones advertised by server in CertificateRequest in TLS 1.3. PKCS#1 v1.5 signatures should not be used for TLS 1.3 messages. This vulnerability affects Firefox < 68.

CVE-2008-1237 [MEDIUM] CWE-399 CVE-2008-1237: Multiple unspecified vulnerabilities in Mozilla Firefox before 2.0.0.13, Thunderbird before 2.0.0.13 Multiple unspecified vulnerabilities in Mozilla Firefox before 2.0.0.13, Thunderbird before 2.0.0.13, and SeaMonkey before 1.1.9 allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via unknown vectors related to the JavaScript engine.

CVE-2008-1380 [CRITICAL] CVE-2008-1380: The JavaScript engine in Mozilla Firefox before 2.0.0.14, Thunderbird before 2.0.0.14, and SeaMonkey The JavaScript engine in Mozilla Firefox before 2.0.0.14, Thunderbird before 2.0.0.14, and SeaMonkey before 1.1.10 allows remote attackers to cause a denial of service (garbage collector crash) and possibly have other impacts via a crafted web page. NOTE: this is due to an incorrect fix for CVE-2008-1237.

CVE-2025-0237 [MEDIUM] CWE-863 CVE-2025-0237: The WebChannel API, which is used to transport various information across processes, did not check t The WebChannel API, which is used to transport various information across processes, did not check the sending principal but rather accepted the principal being sent. This could have led to privilege escalation attacks. This vulnerability was fixed in Firefox 134, Firefox ESR 128.6, Thunderbird 134, and Thunderbird 128.6.

CVE-2005-0527 [MEDIUM] CVE-2005-0527: Firefox 1.0 allows remote attackers to execute arbitrary code via plugins that load "privileged cont Firefox 1.0 allows remote attackers to execute arbitrary code via plugins that load "privileged content" into frames, as demonstrated using certain XUL events when a user drags a scrollbar two times, aka "Firescrolling."

CVE-2006-6501 [MEDIUM] CWE-264 CVE-2006-6501: Unspecified vulnerability in Mozilla Firefox 2.x before 2.0.0.1, 1.5.x before 1.5.0.9, Thunderbird b Unspecified vulnerability in Mozilla Firefox 2.x before 2.0.0.1, 1.5.x before 1.5.0.9, Thunderbird before 1.5.0.9, and SeaMonkey before 1.0.7 allows remote attackers to gain privileges and install malicious code via the watch Javascript function.

CVE-2007-1736 [HIGH] CVE-2007-1736: Mozilla Firefox 2.0.0.3 does not check URLs embedded in (1) object or (2) iframe HTML tags against t Mozilla Firefox 2.0.0.3 does not check URLs embedded in (1) object or (2) iframe HTML tags against the phishing site blacklist, which allows remote attackers to bypass phishing protection.

CVE-2008-0413 [CRITICAL] CWE-399 CVE-2008-0413: The JavaScript engine in Mozilla Firefox before 2.0.0.12, Thunderbird before 2.0.0.12, and SeaMonkey The JavaScript engine in Mozilla Firefox before 2.0.0.12, Thunderbird before 2.0.0.12, and SeaMonkey before 1.1.8 allows remote attackers to cause a denial of service (crash) and possibly trigger memory corruption via (1) a large switch statement, (2) certain uses of watch and eval, (3) certain uses of the mousedown event listener, and other vectors

CVE-2008-0420 [CRITICAL] CWE-200 CVE-2008-0420: modules/libpr0n/decoders/bmp/nsBMPDecoder.cpp in Mozilla Firefox before 2.0.0.12, Thunderbird before modules/libpr0n/decoders/bmp/nsBMPDecoder.cpp in Mozilla Firefox before 2.0.0.12, Thunderbird before 2.0.0.12, and SeaMonkey before 1.1.8 does not properly perform certain calculations related to the mColors table, which allows remote attackers to read portions of memory uninitialized via a crafted 8-bit bitmap (BMP) file that triggers an out-of-bou

CVE-2009-1307 [MEDIUM] CWE-20 CVE-2009-1307: The view-source: URI implementation in Mozilla Firefox before 3.0.9, Thunderbird, and SeaMonkey does The view-source: URI implementation in Mozilla Firefox before 3.0.9, Thunderbird, and SeaMonkey does not properly implement the Same Origin Policy, which allows remote attackers to (1) bypass crossdomain.xml restrictions and connect to arbitrary web sites via a Flash file; (2) read, create, or modify Local Shared Objects via a Flash file; or (3) bypass

CVE-2015-2727 [MEDIUM] CVE-2015-2727: Mozilla Firefox 38.0 and Firefox ESR 38.0 allow user-assisted remote attackers to read arbitrary fil Mozilla Firefox 38.0 and Firefox ESR 38.0 allow user-assisted remote attackers to read arbitrary files or execute arbitrary JavaScript code with chrome privileges via a crafted web site that is accessed with unspecified mouse and keyboard actions. NOTE: this vulnerability exists because of a CVE-2015-0821 regression.

CVE-2012-5354 [MEDIUM] CVE-2012-5354: Mozilla Firefox before 16.0, Thunderbird before 16.0, and SeaMonkey before 2.13 do not properly hand Mozilla Firefox before 16.0, Thunderbird before 16.0, and SeaMonkey before 2.13 do not properly handle navigation away from a web page that has multiple menus of SELECT elements active, which allows remote attackers to conduct clickjacking attacks via vectors involving an XPI file, the window.open method, and the Geolocation API, a different vulnerability tha