CVE-2026-100777

A use-after-free vulnerability exists in the Graphics: Canvas2D component of the Firefox web browser. The flaw has been addressed in multiple versions, including Firefox ESR 153.4 , Firefox 157 , Firefox ESR 115.42 , and Firefox ESR 140.17 . Exploitation details are not provided in the available ...

CVE-2026-100773

A use-after-free vulnerability exists in the Storage: IndexedDB component of Firefox . This issue has been addressed in versions Firefox ESR 153.4 , Firefox 157 , Firefox ESR 115.42 , and Firefox ESR 140.17 . No specific exploitation details or direct links are provided in the documents.

CVE-2026-100776

A use-after-free vulnerability exists in the JavaScript: WebAssembly component of the Firefox web browser. The vulnerability has been addressed in Firefox ESR 153.4 , Firefox 157 , and Firefox ESR 140.17 . Exploitation details are not provided in the documents, but the issue is reported with a hi...

CVE-2026-100817

The JavaScript: WebAssembly component contains an issue affecting Mozilla Thunderbird and Firefox . This vulnerability was addressed in both products starting with version 157 . No specific root cause or exploitation details are provided in the documents. Sighting data confirms the vulnerability ...

CVE-2026-100767

A use-after-free vulnerability exists in the Networking: Cache component of the Firefox browser. This flaw can lead to high-impact consequences, including potential memory corruption or execution issues. The vulnerability has been addressed in several versions, including Firefox ESR 153.4 , Firef...

CVE-2026-100772

The Firefox browser is affected by a use-after-free vulnerability in the DOM: Core & HTML component . This vulnerability can lead to significant security consequences, and it has been addressed in Firefox ESR 153.4 , Firefox 157 , and Firefox ESR 140.17 . Specific exploit details or in-the-wild e...

CVE-2026-100771

This vulnerability involves undefined behavior in the DOM: Streams component of various Mozilla products. The issue has been addressed in Firefox ESR 153.4 , Firefox 157 , Firefox ESR 115.42 , Firefox ESR 140.17 , Thunderbird 157 , Thunderbird 140.17 , and Thunderbird 153.4 . Documentation indica...