CVE-2026-92077: Allocation of Resources Without Limits or Throttling

Denial-of-service in the SVG component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3...

CVE-2026-92079: Protection Mechanism Failure

Mitigation bypass in the Widget: Win32 component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3...

CVE-2026-92039: Protection Mechanism Failure

Mitigation bypass in the DOM: Notifications component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3...

CVE-2026-92046: Use After Free

Use-after-free in the Graphics component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3...

CVE-2026-92053: Improper Privilege Management

Privilege escalation in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3...

CVE-2026-92057: Protection Mechanism Failure

Mitigation bypass in the Enterprise Policies component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3...

CVE-2026-92058: Use After Free

Use-after-free in the Graphics component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3...

CVE-2026-92064: Improper Restriction of Operations within the Bounds of a Memory Buffer

Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3...

CVE-2026-92074: Protection Mechanism Failure

Mitigation bypass in the Popup Blocker component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3...

CVE-2026-92007: Buffer Copy without Checking Size of Input

Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3...

CVE-2026-92010: Buffer Copy without Checking Size of Input

Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3...

CVE-2026-92025: Use After Free

Use-after-free in the DOM: Navigation component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3...

CVE-2026-92032: Improper Restriction of Operations within the Bounds of a Memory Buffer

Sandbox escape due to invalid pointer in the Graphics component. This vulnerability was fixed in Firefox 156, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3...

CVE-2026-92240: Out-of-bounds Read

A malicious or compromised IMAP server can trigger an out-of-bounds read in the IMAP response parser by sending an untagged ' ID' response, crashing Thunderbird. The affected parsing path is reachable before authentication. This vulnerability was fixed in Thunderbird 156, Thunderbird 140.16, and...

PT-2026-91945

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 156 Firefox ESR versions prior to 115.41 Firefox ESR versions prior to 140.16 Firefox ESR versions prior to 153.3 Thunderbird versions prior to 156 Thunderbird versions prior to 140.16 Thunderbird versions prior to...

PT-2026-91941

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 156 Firefox ESR versions prior to 140.16 Firefox ESR versions prior to 153.3 Thunderbird versions prior to 156 Thunderbird versions prior to 140.16 Thunderbird versions prior to 153.3 Description A use-after-free issu...

PT-2026-91949

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 156 Firefox ESR versions prior to 115.41 Firefox ESR versions prior to 140.16 Firefox ESR versions prior to 153.3 Thunderbird versions prior to 156 Thunderbird versions prior to 140.16 Thunderbird versions prior to...

PT-2026-91953

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 156 Firefox ESR versions prior to 115.41 Firefox ESR versions prior to 140.16 Firefox ESR versions prior to 153.3 Thunderbird versions prior to 156 Thunderbird versions prior to 140.16 Thunderbird versions prior to...

PT-2026-91954

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 156 Firefox ESR versions prior to 115.41 Firefox ESR versions prior to 140.16 Firefox ESR versions prior to 153.3 Thunderbird versions prior to 156 Thunderbird versions prior to 140.16 Thunderbird versions prior to...

PT-2026-91961

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 156 Firefox ESR versions prior to 115.41 Firefox ESR versions prior to 140.16 Firefox ESR versions prior to 153.3 Thunderbird versions prior to 156 Thunderbird versions prior to 140.16 Thunderbird versions prior to...