CVE-2026-100821: Origin Validation Error

Site isolation issue in the Panning and Zooming component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17...

PT-2026-102530

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 157 Firefox ESR versions prior to 115.42 Firefox ESR versions prior to 140.17 Firefox ESR versions prior to 153.4 Thunderbird versions prior to 157 Description Incorrect boundary conditions exist within the Audio/Vide...

PT-2026-102532

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 157 Firefox ESR versions prior to 115.42 Firefox ESR versions prior to 140.17 Firefox ESR versions prior to 153.4 Thunderbird versions prior to 157 Description A sandbox escape exists within the DOM Navigation...

PT-2026-102540

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 157 Firefox ESR versions prior to 115.42 Firefox ESR versions prior to 140.17 Firefox ESR versions prior to 153.4 Thunderbird versions prior to 157 Description An information disclosure issue exists within the...

PT-2026-102544

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 157 Firefox ESR versions prior to 115.42 Firefox ESR versions prior to 140.17 Firefox ESR versions prior to 153.4 Thunderbird versions prior to 157 Description A use-after-free issue exists in the DOM: Content Process...

PT-2026-102546

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 157 Firefox ESR versions prior to 140.17 Firefox ESR versions prior to 153.4 Thunderbird versions prior to 157 Description A use-after-free issue exists within the DOM: Core & HTML component. A use-after-free occurs...

PT-2026-102547

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 157 Firefox ESR versions prior to 115.42 Firefox ESR versions prior to 140.17 Firefox ESR versions prior to 153.4 Thunderbird versions prior to 157 Description A use-after-free issue exists in the Storage: IndexedDB...

PT-2026-102556

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 157 Firefox ESR versions prior to 115.42 Firefox ESR versions prior to 140.17 Firefox ESR versions prior to 153.4 Thunderbird versions prior to 157 Description Privilege escalation is possible due to incorrect boundar...

PT-2026-102557

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 157 Firefox ESR versions prior to 115.42 Firefox ESR versions prior to 140.17 Firefox ESR versions prior to 153.4 Thunderbird versions prior to 157 Description Uninitialized memory exists within the Audio/Video...

PT-2026-102562

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 157 Firefox ESR versions prior to 153.4 Firefox ESR versions prior to 140.17 Thunderbird versions prior to 157 Description An invalid pointer issue exists within the JavaScript: WebAssembly component. WebAssembly is a...

PT-2026-102572

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 157 Firefox ESR versions prior to 153.4 Thunderbird versions prior to 157 Description The Storage: Quota Manager component contains a cryptography misuse issue. Recommendations Update Firefox to version 157. Update...

PT-2026-102583

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 157 Firefox ESR versions prior to 153.4 Thunderbird versions prior to 157 Description A same-origin policy bypass exists in the DevTools component. The same-origin policy is a critical security mechanism that restrict...

PT-2026-102588

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 157 Firefox ESR versions prior to 153.4 Thunderbird versions prior to 157 Description Incorrect boundary conditions exist within the JIT Just-In-Time component of the JavaScript Engine. JIT is a method of improving...

PT-2026-102600

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 157 Firefox ESR versions prior to 153.4 Thunderbird versions prior to 157 Description A denial-of-service issue exists within the Storage: StorageManager component. Recommendations Update Firefox to version 157. Updat...

PT-2026-102601

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 157 Firefox ESR versions prior to 153.4 Thunderbird versions prior to 157 Description A mitigation bypass exists within the Bookmarks & History component. Recommendations Update Firefox to version 157. Update Firefox...

CVE-2026-100762: Use After Free

Sandbox escape due to use-after-free in the DOM: Content Processes component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17...

CVE-2026-100769: Use After Free

Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, and Firefox ESR 140.17...

CVE-2026-100773: Use After Free

Use-after-free in the Storage: IndexedDB component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17...

CVE-2026-100774: Use After Free

Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17...

CVE-2026-100780: Use After Free

Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17...