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ALSA-2025:8293 — Important: firefox security update

Affected: AlmaLinux:9: firefox, AlmaLinux:9: firefox-x11

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.

Security Fix(es):

* firefox: thunderbird: Clickjacking vulnerability could have led to leaking saved payment card details (CVE-2025-5267) * firefox: thunderbird: Potential local code execution in ?Copy as cURL? command (CVE-2025-5264) * firefox: thunderbird: Memory safety bugs (CVE-2025-5268) * firefox: thunderbird: Script element events leaked cross-origin resource status (CVE-2025-5266) * firefox: thunderbird: Error handling for script execution was incorrectly isolated from web content (CVE-2025-5263) * firefox: thunderbird: Memory safety bug (CVE-2025-5269)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

bdu:2025-06223

certfr-2025-avi-0454 — De multiples vulnérabilités ont été découvertes dans les produits Mozilla. Certaines d'entre elles permettent à un atta…

certfr-2025-avi-0454

EUVD-2026-290714

fkie_cve-2025-5263

Error handling for script execution was incorrectly isolated from web content, which could have allowed cross-origin leak attacks. This vulnerability was fixed in Firefox 139, Firefox ESR 115.24, Firefox ESR 128.11, Thunderbird 139, and Thunderbird 128.11.

GHSA-pjg4-cx24-6mjc

Error handling for script execution was incorrectly isolated from web content, which could have allowed cross-origin leak attacks. This vulnerability affects Firefox < 139, Firefox ESR < 115.24, and Firefox ESR < 128.11.

OESA-2025-1633 — firefox security update

Affected: openEuler:24.03-LTS-SP1: firefox

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance and portability. Security Fix(es):

Due to insufficient escaping of the newline character in the “Copy as cURL” feature, an attacker could trick a user into using this command, potentially leading to local code execution on the user's system. This vulnerability affects Firefox < 139, Firefox ESR < 115.24, Firefox ESR < 128.11, Thunderbird < 139, and Thunderbird < 128.11.(CVE-2025-5264)

Script elements loading cross-origin resources generated load and error events which leaked information enabling XS-Leaks attacks. This vulnerability affects Firefox < 139, Firefox ESR < 128.11, Thunderbird < 139, and Thunderbird < 128.11.(CVE-2025-5266)

A clickjacking vulnerability could have been used to trick a user into leaking saved payment card details to a malicious page. This vulnerability affects Firefox < 139, Firefox ESR < 128.11, Thunderbird < 139, and Thunderbird < 128.11.(CVE-2025-5267)

Memory safety bugs present in Firefox 138, Thunderbird 138, Firefox ESR 128.10, and Thunderbird 128.10. Some of these bugs showed evidence of memory corruption and we…

openSUSE-SU-2025:15170-1 — firefox-esr-128.11.0-1.1 on GA media

firefox-esr-128.11.0-1.1 on GA media

RHSA-2025:8341 — Red Hat Security Advisory: firefox security update

firefox: thunderbird: Error handling for script execution was incorrectly isolated from web content firefox: thunderbird: Potential local code execution in “Copy as cURL” command firefox: thunderbird: Script element events leaked cross-origin resource status firefox: thunderbird: Clickjacking vulnerability could have led to leaking saved payment card details firefox: thunderbird: Memory safety bugs firefox: thunderbird: Memory safety bug libvpx: Double-free in libvpx encoder

SUSE-SU-2025:01769-1 — Security update for MozillaFirefox

Security update for MozillaFirefox

UBUNTU-CVE-2025-5263

Affected: Ubuntu:18.04:LTS: mozjs52, Ubuntu:18.04:LTS: mozjs38, Ubuntu:20.04:LTS: mozjs68, Ubuntu:20.04:LTS: mozjs52, Ubuntu:22.04:LTS: mozjs102, Ubuntu:22.04:LTS: mozjs78, Ubuntu:22.04:LTS: mozjs91, Ubuntu:22.04:LTS: thunderbird, Ubuntu:24.04:LTS: mozjs102, Ubuntu:24.04:LTS: mozjs115

WID-SEC-W-2025-1160 — Mozilla Firefox und Thunderbird: Mehrere Schwachstellen

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Mozilla Firefox, Mozilla Firefox ESR und Mozilla Thunderbird ausnutzen, um beliebigen Programmcode auszuführen, einen Denial-of-Service auszulösen, Sicherheitsvorkehrungen zu umgehen oder Informationen offenzulegen.