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...

Linux Distros Unpatched Vulnerability : CVE-2026-8388

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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,...

Linux Distros Unpatched Vulnerability : CVE-2026-8389

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 150.0.3. CVE-2026-8389 Note that Nessus relies on the presen...

Amazon Linux 2 : thunderbird, --advisory ALAS2-2026-3290 (ALAS-2026-3290)

The version of thunderbird installed on the remote host is prior to 140.10.0-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2026-3290 advisory. Double-Free / Use-After-Free UAF in the IntoIter::drop and ThinVec::clear functions in the thinvec crate. A panic i...

RHEL 9 : firefox (RHSA-2026:17687)

The remote Redhat Enterprise Linux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2026:17687 advisory. Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. Security Fixes: firefox:...

Important: firefox

Issue Overview: Double-Free / Use-After-Free UAF in the IntoIter::drop and ThinVec::clear functions in the thinvec crate. A panic in ptr::dropinplace skips setting the length to zero. CVE-2026-6654 Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 150,...

RHEL 9 : firefox (RHSA-2026:17688)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:17688 advisory. Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. Security Fixes: firefox:...

Important: thunderbird

Issue Overview: Double-Free / Use-After-Free UAF in the IntoIter::drop and ThinVec::clear functions in the thinvec crate. A panic in ptr::dropinplace skips setting the length to zero. CVE-2026-6654 Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 150,...

RHEL 8 : firefox (RHSA-2026:17477)

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2026:17477 advisory. Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. Security Fixes: firefox:...

RHEL 10 : firefox (RHSA-2026:17690)

The remote Redhat Enterprise Linux 10 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2026:17690 advisory. Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. Security Fixes: firefox:...

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...

RLSA-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...

thunderbird security update

An update is available for thunderbird. This update affects Rocky Linux 9. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list Mozilla Thunderbird is a standalone mail and newsgroup client. Security...

Post-authentication use-after-free error in $_internalJsEmit and mapreduce commands

After invoking $internalJsEmit, which is not intended to be directly accessible, or mapreduce command’s map function in a certain way, an authenticated user can subsequently crash mongod when the server-side JavaScript engine through $where, $function, mapreduce reduce stage, etc. is used also in...

AlmaLinux 9 : thunderbird (ALSA-2026:15892)

The remote AlmaLinux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the ALSA-2026:15892 advisory. firefox: thunderbird: Incorrect boundary conditions in the Libraries component in NSS CVE-2026-6772 firefox: thunderbird: Use-after-free in the JavaScrip...

EUVD-2026-29464

JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 150.0.3...

EUVD-2026-29462

Incorrect boundary conditions in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 150.0.3...

EUVD-2026-29466

Other issue in the JavaScript Engine component. This vulnerability was fixed in Firefox 150.0.3...

CVE-2026-8391

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...

DEBIAN-CVE-2026-8391

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...