Mozilla Thunderbird vulnerabilities

CVE-2021-38506 [MEDIUM] CWE-1021 CVE-2021-38506: Through a series of navigations, Firefox could have entered fullscreen mode without notification or Through a series of navigations, Firefox could have entered fullscreen mode without notification or warning to the user. This could lead to spoofing attacks on the browser UI including phishing. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.

CVE-2020-35111 [MEDIUM] CVE-2020-35111: When an extension with the proxy permission registered to receive <all_urls>, the proxy.onRequest ca When an extension with the proxy permission registered to receive , the proxy.onRequest callback was not triggered for view-source URLs. While web content cannot navigate to such URLs, a user opening View Source could have inadvertently leaked their IP address. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6.

CVE-2023-5725 [MEDIUM] CVE-2023-5725: A malicious installed WebExtension could open arbitrary URLs, which under the right circumstance cou A malicious installed WebExtension could open arbitrary URLs, which under the right circumstance could be leveraged to collect sensitive user data. This vulnerability affects Firefox < 119, Firefox ESR < 115.4, and Thunderbird < 115.4.1.

CVE-2012-3974 [MEDIUM] CWE-399 CVE-2012-3974: Untrusted search path vulnerability in the installer in Mozilla Firefox before 15.0, Firefox ESR 10. Untrusted search path vulnerability in the installer in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, and Thunderbird ESR 10.x before 10.0.7 on Windows allows local users to gain privileges via a Trojan horse executable file in a root directory.

CVE-2024-5690 [MEDIUM] CWE-203 CVE-2024-5690: By monitoring the time certain operations take, an attacker could have guessed which external protoc By monitoring the time certain operations take, an attacker could have guessed which external protocol handlers were functional on a user's system. This vulnerability affects Firefox < 127, Firefox ESR < 115.12, and Thunderbird < 115.12.

CVE-2024-11692 [MEDIUM] CWE-290 CVE-2024-11692: An attacker could cause a select dropdown to be shown over another tab; this could have led to user An attacker could cause a select dropdown to be shown over another tab; this could have led to user confusion and possible spoofing attacks. This vulnerability affects Firefox < 133, Firefox ESR < 128.5, Thunderbird < 133, and Thunderbird < 128.5.

CVE-2026-100783 [MEDIUM] CWE-457 CVE-2026-100783: Uninitialized memory in the Audio/Video component. This vulnerability was fixed in Firefox ESR 153.4 Uninitialized memory in the Audio/Video component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.

CVE-2006-1738 [MEDIUM] CVE-2006-1738: Unspecified vulnerability in Mozilla Firefox and Thunderbird 1.x before 1.5 and 1.0.x before 1.0.8, Unspecified vulnerability in 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 allows remote attackers to cause a denial of service (crash) by changing the (1) -moz-grid and (2) -moz-grid-group display styles.

CVE-2006-4566 [MEDIUM] CVE-2006-4566: Mozilla Firefox before 1.5.0.7, Thunderbird before 1.5.0.7, and SeaMonkey before 1.0.5 allows remote Mozilla Firefox before 1.5.0.7, Thunderbird before 1.5.0.7, and SeaMonkey before 1.0.5 allows remote attackers to cause a denial of service (crash) via a malformed JavaScript regular expression that ends with a backslash in an unterminated character set ("[\\"), which leads to a buffer over-read.

CVE-2009-0777 [MEDIUM] CWE-20 CVE-2009-0777: Mozilla Firefox before 3.0.7, Thunderbird before 2.0.0.21, and SeaMonkey before 1.1.15 decode invisi Mozilla Firefox before 3.0.7, Thunderbird before 2.0.0.21, and SeaMonkey before 1.1.15 decode invisible characters when they are displayed in the location bar, which causes an incorrect address to be displayed and makes it easier for remote attackers to spoof URLs and conduct phishing attacks.

CVE-2009-1302 [MEDIUM] CWE-399 CVE-2009-1302: The browser engine in Mozilla Firefox 3.x before 3.0.9, Thunderbird before 2.0.0.22, and SeaMonkey b The browser engine in Mozilla Firefox 3.x before 3.0.9, Thunderbird before 2.0.0.22, and SeaMonkey before 1.1.16 allows remote attackers to cause a denial of service (application crash) and possibly trigger memory corruption via vectors related to (1) nsAsyncInstantiateEvent::Run, (2) nsStyleContext::Destroy, (3) nsComputedDOMStyle::GetWidth, (4) the

CVE-2006-1741 [MEDIUM] CVE-2006-1741: Mozilla Firefox 1 Mozilla Firefox 1.x before 1.5 and 1.0.x before 1.0.8, Mozilla Suite before 1.7.13, and SeaMonkey before 1.0 allows remote attackers to inject arbitrary Javascript into other sites by (1) "using a modal alert to suspend an event handler while a new page is being loaded", (2) using eval(), and using certain variants involving (3) "new Script;" and (4) using window.__proto__ to extend eval, aka "cross-site JavaScript injection".

CVE-2011-3670 [MEDIUM] CWE-200 CVE-2011-3670: Mozilla Firefox before 3.6.26 and 4.x through 6.0, Thunderbird before 3.1.18 and 5.0 through 6.0, an Mozilla Firefox before 3.6.26 and 4.x through 6.0, Thunderbird before 3.1.18 and 5.0 through 6.0, and SeaMonkey before 2.4 do not properly enforce the IPv6 literal address syntax, which allows remote attackers to obtain sensitive information by making XMLHttpRequest calls through a proxy and reading the error messages.

CVE-2005-0149 [MEDIUM] CVE-2005-0149: Thunderbird 0.6 through 0.9 and Mozilla 1.7 through 1.7.3 does not obey the network.cookie.disableCo Thunderbird 0.6 through 0.9 and Mozilla 1.7 through 1.7.3 does not obey the network.cookie.disableCookieForMailNews preference, which could allow remote attackers to bypass the user's intended privacy and security policy by using cookies in e-mail messages.

CVE-2006-6502 [HIGH] CVE-2006-6502: Use-after-free vulnerability in the LiveConnect bridge code for Mozilla Firefox 2.x before 2.0.0.1, Use-after-free vulnerability in the LiveConnect bridge code for 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 cause a denial of service (crash) via unknown vectors.

CVE-2014-1496 [MEDIUM] CWE-269 CVE-2014-1496: Mozilla Firefox before 28.0, Firefox ESR 24.x before 24.4, Thunderbird before 24.4, and SeaMonkey be Mozilla Firefox before 28.0, Firefox ESR 24.x before 24.4, Thunderbird before 24.4, and SeaMonkey before 2.25 might allow local users to gain privileges by modifying the extracted Mar contents during an update.

CVE-2012-4207 [MEDIUM] CWE-79 CVE-2012-4207: The HZ-GB-2312 character-set implementation in Mozilla Firefox before 17.0, Firefox ESR 10.x before The HZ-GB-2312 character-set implementation in Mozilla Firefox before 17.0, Firefox ESR 10.x before 10.0.11, Thunderbird before 17.0, Thunderbird ESR 10.x before 10.0.11, and SeaMonkey before 2.14 does not properly handle a ~ (tilde) character in proximity to a chunk delimiter, which allows remote attackers to conduct cross-site scripting (XSS) attacks

CVE-2020-16012 [MEDIUM] CVE-2020-16012: Side-channel information leakage in graphics in Google Chrome prior to 87 Side-channel information leakage in graphics in Google Chrome prior to 87.0.4280.66 allowed a remote attacker to leak cross-origin data via a crafted HTML page.

CVE-2015-0827 [MEDIUM] CWE-119 CVE-2015-0827: Heap-based buffer overflow in the mozilla::gfx::CopyRect function in Mozilla Firefox before 36.0, Fi Heap-based buffer overflow in the mozilla::gfx::CopyRect function in Mozilla Firefox before 36.0, Firefox ESR 31.x before 31.5, and Thunderbird before 31.5 allows remote attackers to obtain sensitive information from uninitialized process memory via a malformed SVG graphic.

CVE-2008-5508 [MEDIUM] CWE-20 CVE-2008-5508: 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 SeaMo 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 does not properly parse URLs with leading whitespace or control characters, which might allow remote attackers to misrepresent URLs and simplify phishing attacks.