CVE-2025-9182

Denial-of-service due to out-of-memory in the Graphics: WebRender component. This vulnerability affects Firefox 142, Firefox ESR 140.2, Thunderbird 142, and Thunderbird 140.2...

CVE-2025-9185

Memory safety bugs present in Firefox ESR 115.26, Firefox ESR 128.13, Thunderbird ESR 128.13, Firefox ESR 140.1, Thunderbird ESR 140.1, Firefox 141 and Thunderbird 141. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been...

CVE-2025-9181

Uninitialized memory in the JavaScript Engine component. This vulnerability affects Firefox 142, Firefox ESR 128.14, Firefox ESR 140.2, Thunderbird 142, Thunderbird 128.14, and Thunderbird 140.2...

CVE-2025-8041

In the address bar, Firefox for Android truncated the display of URLs from the end instead of prioritizing the origin. This vulnerability was fixed in Firefox 141...

CVE-2025-8032

XSLT document loading did not correctly propagate the source document which bypassed its CSP. This vulnerability affects Firefox 141, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and Thunderbird 140.1...

CVE-2025-8039

In some cases search terms persisted in the URL bar even after navigating away from the search page. This vulnerability affects Firefox 141, Firefox ESR 140.1, Thunderbird 141, and Thunderbird 140.1...

CVE-2025-8037

Setting a nameless cookie with an equals sign in the value shadowed other cookies. Even if the nameless cookie was set over HTTP and the shadowed cookie included the Secure attribute. This vulnerability affects Firefox 141, Firefox ESR 140.1, Thunderbird 141, and Thunderbird 140.1...

CVE-2025-8030

Insufficient escaping in the “Copy as cURL” feature could potentially be used to trick a user into executing unexpected code. This vulnerability affects Firefox 141, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and Thunderbird 140.1...

CVE-2025-8034

Memory safety bugs present in Firefox ESR 115.25, Firefox ESR 128.12, Thunderbird ESR 128.12, Firefox ESR 140.0, Thunderbird ESR 140.0, Firefox 140 and Thunderbird 140. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been...

CVE-2025-8043

Focus incorrectly truncated URLs towards the beginning instead of around the origin. This vulnerability was fixed in Firefox 141...

CVE-2025-6432

When Multi-Account Containers was enabled, DNS requests could have bypassed a SOCKS proxy when the domain name was invalid or the SOCKS proxy was not responding. This vulnerability affects Firefox 140 and Thunderbird 140...

CVE-2025-6425

An attacker who enumerated resources from the WebCompat extension could have obtained a persistent UUID that identified the browser, and persisted between containers and normal/private browsing mode, but not profiles. This vulnerability affects Firefox 140, Firefox ESR 115.25, Firefox ESR 128.12,...

CVE-2025-6426

The executable file warning did not warn users before opening files with the terminal extension. This bug only affects Firefox for macOS. Other versions of Firefox are unaffected. This vulnerability affects Firefox 140, Firefox ESR 128.12, Thunderbird 140, and Thunderbird 128.12...

CVE-2025-6436

Memory safety bugs present in Firefox 139 and Thunderbird 139. 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 affects Firefox 140 and Thunderbird 140...

CVE-2025-6433

If a user visited a webpage with an invalid TLS certificate, and granted an exception, the webpage was able to provide a WebAuthn challenge that the user would be prompted to complete. This is in violation of the WebAuthN spec which requires "a secure transport established without errors". This...

CVE-2025-5283

Use after free in libvpx in Google Chrome prior to 137.0.7151.55 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. Chromium security severity: Medium...

CVE-2025-5272

Memory safety bugs present in Firefox 138 and Thunderbird 138. 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 affects Firefox 139 and Thunderbird 139...

CVE-2025-5268

Memory safety bugs present in Firefox 138, Thunderbird 138, Firefox ESR 128.10, and Thunderbird 128.10. 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 affects Firefox...

CVE-2025-5266

Script elements loading cross-origin resources generated load and error events which leaked information enabling XS-Leaks attacks. This vulnerability affects Firefox 139, Firefox ESR 128.11, Thunderbird 139, and Thunderbird 128.11...

CVE-2025-5267

A clickjacking vulnerability could have been used to trick a user into leaking saved payment card details to a malicious page. This vulnerability affects Firefox 139, Firefox ESR 128.11, Thunderbird 139, and Thunderbird 128.11...