[SECURITY] [DLA 4750-1] firefox-esr security update

------------------------------------------------------------------------- Debian LTS Advisory DLA-4750-1 [email protected] https://www.debian.org/lts/security/ Emilio Pozuelo Monfort August 21, 2026 https://wiki.debian.org/LTS -...

CVE-2026-74975

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Spoofing issue in the Downloads component in Firefox for Android...

CVE-2026-74982

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Denial-of-service in the Widget component...

CVE-2026-74979

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Mitigation bypass in the Add-ons Manager component...

CVE-2026-74970

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Site isolation issue in the Graphics component...

CVE-2026-74961

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Side-channel in the Web Audio component...

CVE-2026-74958

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Information disclosure in the WebRTC component...

CVE-2026-74952

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Privilege escalation in the Application Update component...

CVE-2026-74954

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Information disclosure due to side-channel in the Storage: Cache API component...

CVE-2026-74951

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Clickjacking issue in Firefox for Android...

CVE-2026-74989

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Internally found bugs present in Firefox 153. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we presume that with enough effort some of these cou...

CVE-2026-74980

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Clickjacking issue in the Downloads component in Firefox for Android...

CVE-2026-75874

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Sandbox escape in the Remote Settings Client component...

openSUSE 16: MozillaFirefox / MozillaFirefox-branding-upstream / etc (openSUSE-SU-2026:21594-1)

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21594-1 advisory. Update to Firefox Extended Support Release 140.14.0 ESR. - MFSA 2026-76 bsc1274867 CVE-2026-74934: Site isolation issue in the Graphics:...

CVE-2026-74950

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Privilege escalation in the Downloads API component...

CVE-2026-74981

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Site isolation issue in the Audio/Video: Web Codecs component...

CVE-2026-74945

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Information disclosure in the Graphics: Text component...

CVE-2026-74957

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Mitigation bypass in the Safe Browsing component...

Security update for MozillaFirefox

This update for MozillaFirefox fixes the following issues: Update to Firefox Extended Support Release 140.14.0 ESR. MFSA 2026-74 bsc1274867 CVE-2026-74934: Site isolation issue in the Graphics: CanvasWebGL component. CVE-2026-74935: Privilege escalation in the DOM: Networking component...

SUSE-SU-2026:3658-1 Security update for MozillaFirefox

This update for MozillaFirefox fixes the following issues: Update to Firefox Extended Support Release 140.14.0 ESR. - MFSA 2026-74 bsc1274867 - CVE-2026-74934: Site isolation issue in the Graphics: CanvasWebGL component. - CVE-2026-74935: Privilege escalation in the DOM: Networking component. -...