RLSA-2026:58897 Important: firefox security update

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. Security Fixes: firefox: thunderbird: Mitigation bypass in the Data Loss Prevention component CVE-2026-74983 firefox: thunderbird: Site isolation issue in the Graphics: CanvasWebGL...

firefox security update

An update is available for firefox. 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 Firefox is an open-source web browser, designed for standards...

firefox security update

An update is available for firefox. This update affects Rocky Linux 8. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list Mozilla Firefox is an open-source web browser, designed for standards...

RLSA-2026:58898 Important: firefox security update

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. Security Fixes: firefox: thunderbird: Mitigation bypass in the Data Loss Prevention component CVE-2026-74983 firefox: thunderbird: Site isolation issue in the Graphics: CanvasWebGL...

Exploit for Improper Privilege Management in Mozilla Firefox

CVE-2026-74939 — Firefox content→parent privilege escalation...

Astra Linux – Vulnerability in Thunderbird

A memory safety bug exists in Firefox ESR 128.9 and Thunderbird 128.9. This bug exhibited signs of memory corruption, and we assume that with sufficient effort, this flaw could have been exploited to execute arbitrary code. This vulnerability has been fixed in Firefox ESR 128.10 and Thunderbird...

Astra Linux – Vulnerability in Thunderbird

A memory safety bug exists in Firefox ESR 128.10 and Thunderbird 128.10. This bug exhibited signs of memory corruption, and we assume that with sufficient effort, this flaw could have been exploited to execute arbitrary code. This vulnerability has been fixed in Firefox ESR 128.11 and Thunderbird...

Astra Linux – Vulnerability in Firefox and Thunderbird

After requesting multiple permissions and closing the first permission panel, subsequent permission panels will be displayed in a different position, but still record a click at the default location. This allows users to be tricked into accepting permissions they do not want to grant. This bug on...

Astra Linux – Vulnerability in Firefox and Thunderbird

Poor management of ownership led to a “use-after-free” vulnerability in ReadableByteStreams. This vulnerability affects Firefox 120, Firefox ESR 115.5.0, and Thunderbird 115.5...

Astra Linux – Vulnerability in Thunderbird, Firefox

Parsing a JavaScript module as JSON can, under certain circumstances, lead to cross-compartment access, which may result in a use-after-free vulnerability. This vulnerability has been fixed in Firefox 134, Firefox ESR 128.6, Thunderbird 134, and Thunderbird 128.6...

Astra Linux – Vulnerability in Firefox and Thunderbird

Due to a layout change, the contents of iframes might be rendered outside of their borders. This could lead to user confusion or spoofing attacks. This vulnerability affects Thunderbird 91.8, Firefox 99, and Firefox ESR 91.8...

Astra Linux – Vulnerability in Firefox, Thunderbird

A compromised web process that used malicious IPC messages could cause the privileged browser process to reveal blocks of its memory to the compromised process. This vulnerability was fixed in Firefox 144, Firefox ESR 115.29, Firefox ESR 140.4, Thunderbird 144, and Thunderbird 140.4...

Astra Linux – Vulnerability in Firefox and Thunderbird

Memory safety bugs exist in Firefox 122, Firefox ESR 115.7, and Thunderbird 115.7. Some of these bugs exhibited signs of memory corruption, and we assume that with sufficient effort, some of these bugs could have been exploited to execute arbitrary code. This vulnerability affects Firefox version...

Astra Linux – Vulnerability in Firefox

When downloading an HTML file, if the title of the page is formatted as a filename with a malicious extension, Firefox may save the file with that extension. This could lead to potential system compromise if the downloaded file is later executed. This vulnerability affects Firefox versions earlie...

Astra Linux - уязвимость в firefox, thunderbird

When a ServiceWorker intercepted a request with FetchEvent, the origin of the request was lost after the ServiceWorker took ownership of it. This had the effect of negating SameSite cookie protections. This was addressed in the spec and then in browsers. This vulnerability affects Firefox ESR...

Astra Linux – Vulnerability in Firefox and Thunderbird

Incorrect boundary conditions in the Layout: Text and Fonts component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9...

Astra Linux – Vulnerability in Firefox

A compromised web child process could disable web security opening restrictions, resulting in a new child process being spawned within the file:// context. With a reliable exploit primitive, this new process could be exploited again, leading to arbitrary file reading. This vulnerability affects...

Important: firefox security update

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. Security Fixes: firefox: thunderbird: Mitigation bypass in the Data Loss Prevention component CVE-2026-74983 firefox: thunderbird: Site isolation issue in the Graphics: CanvasWebGL...

OPENSUSE-SU-2026:11580-1 MozillaFirefox-154.0-1.1 on GA media

These are all security issues fixed in the MozillaFirefox-154.0-1.1 package on the GA media of openSUSE Tumbleweed...

SUSE SLED15: MozillaFirefox / MozillaFirefox-devel / etc (SUSE-SU-2026:3658-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:3658-1 advisory. Update to Firefox Extended Support Release 140.14.0 ESR. - MFSA 2026-74 bsc1274867 - CVE-2026-74934: Site...