CVE-2025-10536

Information disclosure in the Networking: Cache component. This vulnerability was fixed in Firefox 143, Firefox ESR 140.3, Thunderbird 143, and Thunderbird 140.3...

CVE-2025-10528

Sandbox escape due to undefined behavior, invalid pointer in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 143, Firefox ESR 140.3, Thunderbird 143, and Thunderbird 140.3...

[SECURITY] Fedora 42 Update: thunderbird-128.11.1-1.fc42

Mozilla Thunderbird is a standalone mail and newsgroup client...

CVE-2024-10465

A clipboard "paste" button could persist across tabs which allowed a spoofing attack. This vulnerability affects Firefox 132, Firefox ESR 128.4, Thunderbird 128.4, and Thunderbird 132...

CVE-2024-10462

Truncation of a long URL could have allowed origin spoofing in a permission prompt. This vulnerability affects Firefox 132, Firefox ESR 128.4, Thunderbird 128.4, and Thunderbird 132...

CVE-2024-7527

Unexpected marking work at the start of sweeping could have led to a use-after-free. This vulnerability affects Firefox 129, Firefox ESR 115.14, Firefox ESR 128.1, Thunderbird 128.1, and Thunderbird 115.14...

CVE-2022-34481

In the nsTArrayImpl::ReplaceElementsAt function, an integer overflow could have occurred when the number of elements to replace was too large for the container. This vulnerability affects Firefox 102, Firefox ESR 91.11, Thunderbird 102, and Thunderbird 91.11...

CVE-2021-23953

If a user clicked into a specifically crafted PDF, the PDF reader could be confused into leaking cross-origin information, when said information is served as chunked data. This vulnerability affects Firefox 85, Thunderbird 78.7, and Firefox ESR 78.7...

CVE-2020-6792

When deriving an identifier for an email message, uninitialized memory was used in addition to the message contents. This vulnerability affects Thunderbird 68.5...