CVE-2026-8971

The CVE-2026-8971 issue is described across multiple sources as a same-origin policy bypass in the Networking: JAR component, with remediation issued as Firefox 151. The documents do not specify the exact affected product versions beyond Firefox, nor any exploits or in-the-wild use. Root cause de...

CVE-2026-8971

Same-origin policy bypass in the Networking: JAR component. This vulnerability was fixed in Firefox 151 and Thunderbird 151...

CVE-2026-8956 Integer overflow in the Networking: JAR component

Integer overflow in the Networking: JAR component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11...

CVE-2026-8956

Integer overflow in the Networking: JAR component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11...

KLA91058 Multiple vulnerabilities in Mozilla Thunderbird

Multiple vulnerabilities were found in Mozilla Thunderbird. Malicious users can exploit these vulnerabilities to bypass security restrictions, cause denial of service, execute arbitrary code, obtain sensitive information, spoof user interface. Below is a complete list of vulnerabilities: 1. Denia...

PT-2026-41910

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 151 Firefox ESR versions prior to 140.11 Thunderbird versions prior to 151 Thunderbird versions prior to 140.11 Description An integer overflow exists in the Networking: JAR component. An integer overflow occurs when ...

PT-2026-41925

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 151 Thunderbird versions prior to 151 Description A same-origin policy bypass exists in the Networking: JAR component. The same-origin policy is a critical security mechanism that restricts how a document or script...

Security update for MozillaThunderbird

This update for MozillaThunderbird fixes the following issues: Mozilla Thunderbird 140.8 MFSA 2026-17 bsc1258568: CVE-2026-2757: Incorrect boundary conditions in the WebRTC: Audio/Video component CVE-2026-2758: Use-after-free in the JavaScript: GC component CVE-2026-2759: Incorrect boundary...

firefox: thunderbird: Incorrect boundary conditions in the Networking: JAR component

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Incorrect boundary conditions in the Networking: JAR component...

firefox: thunderbird: Incorrect boundary conditions in the Networking: JAR component

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Incorrect boundary conditions in the Networking: JAR component...

firefox: thunderbird: Same-origin policy bypass in the Networking: JAR component

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Same-origin policy bypass in the Networking: JAR component...

firefox: thunderbird: Incorrect boundary conditions in the Networking: JAR component

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Incorrect boundary conditions in the Networking: JAR component...

firefox: thunderbird: Same-origin policy bypass in the Networking: JAR component

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Same-origin policy bypass in the Networking: JAR component...

firefox: thunderbird: Incorrect boundary conditions in the Networking: JAR component

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Incorrect boundary conditions in the Networking: JAR component...

firefox: thunderbird: Same-origin policy bypass in the Networking: JAR component

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Same-origin policy bypass in the Networking: JAR component...

firefox: thunderbird: Incorrect boundary conditions in the Networking: JAR component

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Incorrect boundary conditions in the Networking: JAR component...

firefox: thunderbird: Same-origin policy bypass in the Networking: JAR component

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Same-origin policy bypass in the Networking: JAR component...

firefox: thunderbird: Same-origin policy bypass in the Networking: JAR component

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Same-origin policy bypass in the Networking: JAR component...

firefox: thunderbird: Incorrect boundary conditions in the Networking: JAR component

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Incorrect boundary conditions in the Networking: JAR component...

firefox: thunderbird: Same-origin policy bypass in the Networking: JAR component

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Same-origin policy bypass in the Networking: JAR component...