Spoofing

A malicious website that could create a popup could have resized the popup to overlay the address bar with its own content, resulting in potential user confusion or spoofing attacks. This bug only affects Thunderbird for Linux. Other operating systems are unaffected.. This vulnerability affects...

Design/Logic Flaw

A file with a long filename could have had its filename truncated to remove the valid extension, leaving a malicious extension in its place. This could potentially led to user confusion and the execution of malicious code.Note: This issue was originally included in the advisories for Thunderbird...

Design/Logic Flaw

Certain network request objects were freed too early when releasing a network request handle. This could have lead to a use-after-free causing a potentially exploitable crash. This vulnerability affects Firefox ESR 91.5, Firefox 96, and Thunderbird 91.5...

Code injection

When a worker is shutdown, it was possible to cause script to run late in the lifecycle, at a point after where it should not be possible. This vulnerability affects Firefox 96, Thunderbird 91.6, and Firefox ESR 91.6...

Code injection

NSSToken objects were referenced via direct points, and could have been accessed in an unsafe way on different threads, leading to a use-after-free and potentially exploitable crash. This vulnerability affects Thunderbird 91.8, Firefox 99, and Firefox ESR 91.8...

Code injection

An out of date graphics library Angle likely contained vulnerabilities that could potentially be exploited. This vulnerability affects Thunderbird 78.9 and Firefox ESR 78.9...

CVE-2022-31739

When downloading files on Windows, the % character was not escaped, which could have lead to a download incorrectly being saved to attacker-influenced paths that used variables such as %HOMEPATH% or %APPDATA%.This bug only affects Firefox for Windows. Other operating systems are unaffected.. This...

Memory corruption

Mozilla developers Andrew McCreight, Gabriele Svelto, Tom Ritter and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 99 and Firefox ESR 91.8. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been...

Memory corruption

A crafted CMS message could have been processed incorrectly, leading to an invalid memory read, and potentially further memory corruption. This vulnerability affects Thunderbird 91.10, Firefox 101, and Firefox ESR 91.10...

Design/Logic Flaw

A data race could occur in the PK11ChangePW function, potentially leading to a use-after-free vulnerability. In Firefox, this lock protected the data when a user changed their master password. This vulnerability affects Firefox ESR 102.2 and Thunderbird 102.2...

Design/Logic Flaw

An attacker could have injected CSS into stylesheets accessible via internal URIs, such as resource:, and in doing so bypass a page's Content Security Policy. This vulnerability affects Firefox ESR 91.11, Thunderbird 102, Thunderbird 91.11, and Firefox 101...

Integer overflow

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-2022-34478

The ms-msdt, search, and search-ms protocols deliver content to Microsoft applications, bypassing the browser, when a user accepts a prompt. These applications have had known vulnerabilities, exploited in the wild although we know of none exploited through Thunderbird, so in this release...

Input validation

An improper implementation of the new iframe sandbox keyword allow-top-navigation-by-user-activation could lead to script execution without allow-scripts being present. This vulnerability affects Thunderbird 91.9, Firefox ESR 91.9, and Firefox 100...

Memory corruption

Mozilla developers and community members Julian Hector, Randell Jesup, Gabriele Svelto, Tyson Smith, Christian Holler, and Masayuki Nakano reported memory safety bugs present in Firefox 94. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of thes...

Design/Logic Flaw

Keyboard events reference strings like "KeyA" that were at fixed, known, and widely-spread addresses. Cache-based timing attacks such as Prime+Probe could have possibly figured out which keys were being pressed. This vulnerability affects Firefox ESR 102.5, Thunderbird 102.5, and Firefox 107...

Memory corruption

Mozilla developers Andrew McCreight and Gabriele Svelto reported memory safety bugs present in Thunderbird 102.4. 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 affect...

Memory corruption

Mozilla developers and community members Nika Layzell, Andrew McCreight, Gabriele Svelto, and the Mozilla Fuzzing Team reported memory safety bugs present in Thunderbird 91.7. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have...

Code injection

On arm64, WASM code could have resulted in incorrect assembly generation leading to a register allocation problem, and a potentially exploitable crash. This vulnerability affects Thunderbird 91.10, Firefox 101, and Firefox ESR 91.10...

Design/Logic Flaw

Malicious websites could have tricked users into accepting launching a program to handle an external URL protocol. This vulnerability affects Firefox ESR 91.5, Firefox 96, and Thunderbird 91.5...