CVE-2026-100782: Improper Restriction of Operations within the Bounds of a Memory Buffer

Privilege escalation due to incorrect boundary conditions in the Graphics 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-2026-100807: Improper Privilege Management

Privilege escalation in the DOM: Service Workers 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-2026-100818: Use After Free

Sandbox escape due to use-after-free in the Widget: Gtk 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...

PT-2026-102561

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 sandbox escape exists in the XUL component. A sandbox is a security mechanism for separating running programs, ensuring that code...

PT-2026-102585

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 A use-after-free issue exists in the DOM: Core & HTML component, which can lead to a sandbox...

PT-2026-102589

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 use-after-free issue exists in the CSS Parsing and Computation component. Use-after-free is a memory corruption flaw that occurs...

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...

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-2026-102599

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 use-after-free issue exists within the JIT Just-In-Time component of the JavaScript Engine. A use-after-free occurs when an...

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...

CVE-2026-100766: Exposure of Sensitive Information to an Unauthorized Actor

Information disclosure in the Networking: JAR 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-2026-100777: Use After Free

Use-after-free in the Graphics: Canvas2D 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-2026-100798: Undefined Security Weakness

Cryptography misuse in Storage: Quota Manager component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157...

CVE-2026-100824: Improper Privilege Management

Privilege escalation in the Places component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157...

KLA91303 Multiple vulnerabilities in Mozilla Firefox

Multiple vulnerabilities were found in Mozilla Firefox. 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. Denial of...

PT-2026-102839

Name of the Vulnerable Software and Affected Versions Google Chrome versions prior to 154.0.8037.92 Description A use after free issue exists in the Bluetooth component. This occurs when a program continues to use a pointer after it has been freed, which can lead to memory corruption. A remote...

PT-2026-102838

Name of the Vulnerable Software and Affected Versions Google Chrome on iOS versions prior to 154.0.8037.92 Description A UI misrepresentation issue exists in the SignIn component. A remote attacker can spoof UI elements by using a specially crafted HTML page. Recommendations Update Google Chrome ...

PT-2026-102596

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 spoofing issue exists within the Networking: HTTP component. Recommendations Update Firefox to version 157. Update Firefox ESR to...

MiracleLinux 8 : firefox-140.15.0-1.el8_10.ML.1 (AXSA:2026-1932:24)

The remote MiracleLinux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the AXSA:2026-1932:24 advisory. firefox: thunderbird: Privilege escalation in the DOM: Workers component CVE-2026-16365 firefox: thunderbird: Sandbox escape in the Remote Settings...