Vulnerabilities (CVE)

Filtered by vendor Mozilla Subscribe
Total 3978 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2026-12327 1 Mozilla 2 Firefox, Thunderbird 2026-10-26 N/A 8.1 HIGH
Memory safety bugs present in Firefox ESR 140.11, Thunderbird ESR 140.11, Firefox 151 and Thunderbird 151. 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 was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.
CVE-2026-12319 1 Mozilla 2 Firefox, Thunderbird 2026-10-26 N/A 6.5 MEDIUM
Denial-of-service in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.
CVE-2026-45173 4 Google, Microsoft, Mozilla and 1 more 4 Chrome, Edge Chromium, Firefox and 1 more 2026-10-26 N/A 6.5 MEDIUM
Idira Identity Browser Extension (Chrome, Firefox, and Edge builds) versions prior to 26.8.1 exhibit an origin validation flaw within its internal web-page verification routines. If an authenticated user navigates to a specially crafted webpage, this interaction could potentially allow a remote attacker to trigger unauthorized application interaction or execution parameters within the context of that authenticated browser session. CyberArk Security Bulletin: CA26-21
CVE-2026-12290 1 Mozilla 2 Firefox, Thunderbird 2026-10-26 N/A 8.1 HIGH
Memory safety bug fixed in Thunderbird 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.
CVE-2026-12291 1 Mozilla 2 Firefox, Thunderbird 2026-10-26 N/A 8.8 HIGH
Use-after-free in the Networking: HTTP component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.
CVE-2026-12299 1 Mozilla 2 Firefox, Thunderbird 2026-10-26 N/A 5.4 MEDIUM
JIT miscompilation in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.
CVE-2026-12289 1 Mozilla 2 Firefox, Thunderbird 2026-10-26 N/A 8.8 HIGH
Privilege escalation in the Graphics: WebRender component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.
CVE-2026-12292 1 Mozilla 2 Firefox, Thunderbird 2026-10-26 N/A 8.1 HIGH
Incorrect boundary conditions in the Web Audio component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.
CVE-2026-12297 1 Mozilla 2 Firefox, Thunderbird 2026-10-26 N/A 9.6 CRITICAL
Sandbox escape due to incorrect boundary conditions in the Networking component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.
CVE-2026-6756 1 Mozilla 1 Firefox 2026-10-26 N/A 7.5 HIGH
Mitigation bypass in Firefox for Android. This vulnerability was fixed in Firefox 150.
CVE-2026-6785 1 Mozilla 2 Firefox, Thunderbird 2026-10-26 N/A 7.5 HIGH
Memory safety bugs present in Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird ESR 140.9, Firefox 149 and Thunderbird 149. 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 was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
CVE-2026-6768 1 Mozilla 2 Firefox, Thunderbird 2026-10-26 N/A 9.8 CRITICAL
Mitigation bypass in the Networking: Cookies component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
CVE-2026-6781 1 Mozilla 2 Firefox, Thunderbird 2026-10-26 N/A 7.5 HIGH
Denial-of-service in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
CVE-2026-6782 1 Mozilla 2 Firefox, Thunderbird 2026-10-26 N/A 7.5 HIGH
Information disclosure in the IP Protection component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
CVE-2026-8091 1 Mozilla 2 Firefox, Thunderbird 2026-10-26 N/A 9.8 CRITICAL
Incorrect boundary conditions in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 150, Thunderbird 150, Firefox ESR 140.10.1, Thunderbird 140.10.1, and Firefox ESR 115.35.2.
CVE-2026-53899 1 Mozilla 1 Firefox Mobile 2026-10-26 N/A 6.5 MEDIUM
Firefox for iOS used partial domain matching when attaching cookies to PDF requests, allowing a malicious site on a suffix domain to receive cookies belonging to the target site. This vulnerability was fixed in Firefox for iOS 152.0.
CVE-2026-6779 1 Mozilla 2 Firefox, Thunderbird 2026-10-26 N/A 5.3 MEDIUM
Other issue in the JavaScript Engine component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
CVE-2026-6760 1 Mozilla 2 Firefox, Thunderbird 2026-10-26 N/A 9.8 CRITICAL
Mitigation bypass in the Networking: Cookies component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
CVE-2026-6755 1 Mozilla 2 Firefox, Thunderbird 2026-10-26 N/A 6.5 MEDIUM
Mitigation bypass in the DOM: postMessage component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
CVE-2026-6776 1 Mozilla 2 Firefox, Thunderbird 2026-10-26 N/A 7.8 HIGH
Incorrect boundary conditions in the WebRTC: Networking component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.