Mozilla Thunderbird vulnerabilities

CVE-2016-9074 [MEDIUM] CWE-200 CVE-2016-9074: An existing mitigation of timing side-channel attacks is insufficient in some circumstances. This is An existing mitigation of timing side-channel attacks is insufficient in some circumstances. This issue is addressed in Network Security Services (NSS) 3.26.1. This vulnerability affects Thunderbird < 45.5, Firefox ESR < 45.5, and Firefox < 50.

CVE-2020-16042 [MEDIUM] CVE-2020-16042: Uninitialized Use in V8 in Google Chrome prior to 87 Uninitialized Use in V8 in Google Chrome prior to 87.0.4280.88 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page.

CVE-2023-6205 [MEDIUM] CWE-416 CVE-2023-6205: It was possible to cause the use of a MessagePort after it had already been freed, which could poten It was possible to cause the use of a MessagePort after it had already been freed, which could potentially have led to an exploitable crash. This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.

CVE-2022-22742 [MEDIUM] CWE-125 CVE-2022-22742: When inserting text while in edit mode, some characters might have lead to out-of-bounds memory acce When inserting text while in edit mode, some characters might have lead to out-of-bounds memory access causing a potentially exploitable crash. This vulnerability affects Firefox ESR < 91.5, Firefox < 96, and Thunderbird < 91.5.

CVE-2023-29535 [MEDIUM] CVE-2023-29535: Following a Garbage Collector compaction, weak maps may have been accessed before they were correctl Following a Garbage Collector compaction, weak maps may have been accessed before they were correctly traced. This resulted in memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 112, Focus for Android < 112, Firefox ESR < 102.10, Firefox for Android < 112, and Thunderbird < 102.10.

CVE-2024-0746 [MEDIUM] CWE-416 CVE-2024-0746: A Linux user opening the print preview dialog could have caused the browser to crash. This vulnerabi A Linux user opening the print preview dialog could have caused the browser to crash. This vulnerability affects Firefox < 122, Firefox ESR < 115.7, and Thunderbird < 115.7.

CVE-2022-45403 [MEDIUM] CWE-203 CVE-2022-45403: Service Workers should not be able to infer information about opaque cross-origin responses; but tim Service Workers should not be able to infer information about opaque cross-origin responses; but timing information for cross-origin media combined with Range requests might have allowed them to determine the presence or length of a media file. This vulnerability affects Firefox ESR < 102.5, Thunderbird < 102.5, and Firefox < 107.

CVE-2021-23998 [MEDIUM] CWE-345 CVE-2021-23998: Through complicated navigations with new windows, an HTTP page could have inherited a secure lock ic Through complicated navigations with new windows, an HTTP page could have inherited a secure lock icon from an HTTPS page. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.

CVE-2021-38497 [MEDIUM] CWE-346 CVE-2021-38497: Through use of reportValidity() and window.open(), a plain-text validation message could have been o Through use of reportValidity() and window.open(), a plain-text validation message could have been overlaid on another origin, leading to possible user confusion and spoofing attacks. This vulnerability affects Firefox < 93, Thunderbird < 91.2, and Firefox ESR < 91.2.

CVE-2024-11706 [MEDIUM] CWE-476 CVE-2024-11706: A null pointer dereference may have inadvertently occurred in `pk12util`, and specifically in the `S A null pointer dereference may have inadvertently occurred in `pk12util`, and specifically in the `SEC_ASN1DecodeItem_Util` function, when handling malformed or improperly formatted input files. This vulnerability affects Firefox < 133 and Thunderbird < 133.

CVE-2021-4126 [MEDIUM] CVE-2021-4126: When receiving an OpenPGP/MIME signed email message that contains an additional outer MIME message l When receiving an OpenPGP/MIME signed email message that contains an additional outer MIME message layer, for example a message footer added by a mailing list gateway, Thunderbird only considered the inner signed message for the signature validity. This gave the false impression that the additional contents were also covered by the digital signature. Starting

CVE-2023-23601 [MEDIUM] CWE-346 CVE-2023-23601: Navigations were being allowed when dragging a URL from a cross-origin iframe into the same tab whic Navigations were being allowed when dragging a URL from a cross-origin iframe into the same tab which could lead to website spoofing attacks This vulnerability affects Firefox < 109, Firefox ESR < 102.7, and Thunderbird < 102.7.

CVE-2025-11711 [MEDIUM] CWE-591 CVE-2025-11711: There was a way to change the value of JavaScript Object properties that were supposed to be non-wri There was a way to change the value of JavaScript Object properties that were supposed to be non-writeable. This vulnerability was fixed in Firefox 144, Firefox ESR 115.29, Firefox ESR 140.4, Thunderbird 144, and Thunderbird 140.4.

CVE-2026-12319 [MEDIUM] CWE-400 CVE-2026-12319: Denial-of-service in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 15 Denial-of-service in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.

CVE-2005-2261 [HIGH] CVE-2005-2261: Firefox before 1.0.5, Thunderbird before 1.0.5, Mozilla before 1.7.9, Netscape 8.0.2, and K-Meleon 0 Firefox before 1.0.5, Thunderbird before 1.0.5, Mozilla before 1.7.9, Netscape 8.0.2, and K-Meleon 0.9 runs XBL scripts even when Javascript has been disabled, which makes it easier for remote attackers to bypass such protection.

CVE-2013-1717 [MEDIUM] CWE-264 CVE-2013-1717: Mozilla Firefox before 23.0, Firefox ESR 17.x before 17.0.8, Thunderbird before 17.0.8, Thunderbird Mozilla Firefox before 23.0, Firefox ESR 17.x before 17.0.8, Thunderbird before 17.0.8, Thunderbird ESR 17.x before 17.0.8, and SeaMonkey before 2.20 do not properly restrict local-filesystem access by Java applets, which allows user-assisted remote attackers to read arbitrary files by leveraging a download to a fixed pathname or other predictable path

CVE-2024-2609 [MEDIUM] CWE-356 CVE-2024-2609: The permission prompt input delay could expire while the window is not in focus. This makes it vulne The permission prompt input delay could expire while the window is not in focus. This makes it vulnerable to clickjacking by malicious websites. This vulnerability affects Firefox < 124, Firefox ESR < 115.10, and Thunderbird < 115.10.

CVE-2024-5693 [MEDIUM] CWE-829 CVE-2024-5693: Offscreen Canvas did not properly track cross-origin tainting, which could be used to access image d Offscreen Canvas did not properly track cross-origin tainting, which could be used to access image data from another site in violation of same-origin policy. This vulnerability affects Firefox < 127, Firefox ESR < 115.12, and Thunderbird < 115.12.

CVE-2011-3665 [HIGH] CWE-399 CVE-2011-3665: Mozilla Firefox 4.x through 8.0, Thunderbird 5.0 through 8.0, and SeaMonkey before 2.6 allow remote Mozilla Firefox 4.x through 8.0, Thunderbird 5.0 through 8.0, and SeaMonkey before 2.6 allow remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact via an Ogg VIDEO element that is not properly handled after scaling.

CVE-2023-4049 [MEDIUM] CVE-2023-4049: Race conditions in reference counting code were found through code inspection Race conditions in reference counting code were found through code inspection. These could have resulted in potentially exploitable use-after-free vulnerabilities. This vulnerability affects Firefox < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1.