CVE-2026-8388

Incorrect boundary conditions in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 150.0.3, Firefox ESR 115.36, Firefox ESR 140.11, and Thunderbird 140.11...

CVE-2026-8388 Incorrect boundary conditions in the JavaScript Engine: JIT component

Incorrect boundary conditions in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 150.0.3, Firefox ESR 115.36, Firefox ESR 140.11, and Thunderbird 140.11...

PT-2026-40023

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 150.0.3 Description An issue exists within the JavaScript Engine component...

PT-2026-40021

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 150.0.3 Description JIT miscompilation occurs within the JIT component of the JavaScript Engine. JIT Just-In-Time compilation is a method used to improve the execution speed of programs by compiling code during runtim...

Google Chrome security vulnerabilities

Google Chrome is a web browser developed by Google Inc. Versions of Google Chrome prior to 148.0.7778.168 contained a security vulnerability, which was caused by a type confusion issue in the V8 component. This vulnerability could allow remote attackers to obtain potentially sensitive information...

Mozilla Firefox security vulnerabilities

Mozilla Firefox is an open-source web browser developed by the Mozilla Foundation in the United States. Versions of Mozilla Firefox prior to 150.0.3 contained a security vulnerability, which was caused by a compilation error in the JavaScript Engine’s JIT component...

Mozilla Firefox security vulnerabilities

Mozilla Firefox is an open-source web browser developed by the Mozilla Foundation in the United States. Versions of Mozilla Firefox prior to 150.0.3 contained security vulnerabilities, which were caused by issues with the JavaScript Engine component...

CVE-2026-8388: Improper Restriction of Operations within the Bounds of a Memory Buffer

Incorrect boundary conditions in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 150.0.3, Firefox ESR 115.36, Firefox ESR 140.11, and Thunderbird 140.11...

CVE-2026-8391: Improper Input Validation

Other issue in the JavaScript Engine component. This vulnerability was fixed in Firefox 150.0.3, Firefox ESR 115.36, Firefox ESR 140.11, and Thunderbird 140.11...

PT-2026-40020

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 150.0.3 Description Incorrect boundary conditions exist in the Just-In-Time JIT component of the JavaScript Engine. JIT is a compilation method that improves performance by compiling bytecode into native machine code ...

Mozilla Firefox buffer error vulnerability

Mozilla Firefox is an open-source web browser developed by the Mozilla Foundation in the United States. Versions of Mozilla Firefox prior to 150.0.3 contained a buffer error vulnerability, which was caused by a boundary condition error in the JavaScript Engine’s JIT component...

PT-2026-41069

Name of the Vulnerable Software and Affected Versions Google Chrome versions prior to 148.0.7778.168 Description A type confusion issue in V8 allows a remote attacker to execute arbitrary code within a sandbox by using a specially crafted HTML page. Type confusion occurs when a program accesses a...

Security Vulnerabilities fixed in Firefox 150.0.3 — Mozilla

CVE-2026-8388: Incorrect boundary conditions in the JavaScript Engine: JIT component Reporter ggwhyp Impact high References Bug 2036978 CVE-2026-8389: JIT miscompilation in the JavaScript Engine: JIT component Reporter ggwhyp Impact high References Bug 2036983 CVE-2026-8390: Use-after-free in the...

Google Chrome security vulnerabilities

Google Chrome is a web browser developed by Google Inc. Versions of Google Chrome prior to 148.0.7778.168 contained a security vulnerability, which was caused by a type confusion in the V8 component. This vulnerability could allow remote attackers to execute arbitrary code within a sandbox throug...

firefox: thunderbird: Use-after-free in the JavaScript Engine component

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Use-after-free in the JavaScript Engine component...

Agentic Fuzzing: Opportunities and Challenges

Fuzzers and static analyzers find many bugs but struggle with logic bugs in mature codebases. Triggering such a bug often requires multi-step reasoning that produces no distinctive execution feedback, and variants can appear across implementations too different for a single pattern to match. Rece...

ALSA-2026:15892 Important: thunderbird security update

Mozilla Thunderbird is a standalone mail and newsgroup client. Security Fixes: firefox: thunderbird: Incorrect boundary conditions in the Libraries component in NSS CVE-2026-6772 firefox: thunderbird: Use-after-free in the JavaScript Engine component CVE-2026-6754 firefox: thunderbird: Spoofing...

Important: thunderbird security update

Mozilla Thunderbird is a standalone mail and newsgroup client. Security Fixes: firefox: thunderbird: Incorrect boundary conditions in the Libraries component in NSS CVE-2026-6772 firefox: thunderbird: Use-after-free in the JavaScript Engine component CVE-2026-6754 firefox: thunderbird: Spoofing...

MGASA-2026-0125 Updated thunderbird packages fix security vulnerabilities

Use-after-free in the DOM: Core & HTML component. CVE-2026-6746 Use-after-free in the WebRTC component. CVE-2026-6747 Uninitialized memory in the Audio/Video: Web Codecs component. CVE-2026-6748 Information disclosure due to uninitialized memory in the Graphics: Canvas2D component. CVE-2026-6749...

Updated thunderbird packages fix security vulnerabilities

Use-after-free in the DOM: Core & HTML component. CVE-2026-6746 Use-after-free in the WebRTC component. CVE-2026-6747 Uninitialized memory in the Audio/Video: Web Codecs component. CVE-2026-6748 Information disclosure due to uninitialized memory in the Graphics: Canvas2D component. CVE-2026-6749...