Hi, You are receiving an AlmaLinux Security update email because you subscribed to receive errata notifications from AlmaLinux. AlmaLinux: 10 Type: Security Severity: Important Release date: 2026-02-09 Summary: Mozilla Thunderbird is a standalone mail and newsgroup client. Security Fix(es): * firefox: Spoofing issue in the Downloads Panel component (CVE-2025-14327) * firefox: Use-after-free in the JavaScript: GC component (CVE-2026-0885) * firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147 (CVE-2026-0891) * firefox: Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component (CVE-2026-0878) * firefox: Use-after-free in the IPC component (CVE-2026-0882) * firefox: Use-after-free in the JavaScript Engine component (CVE-2026-0884) * firefox: Information disclosure in the Networking component (CVE-2026-0883) * firefox: Mitigation bypass in the DOM: Security component (CVE-2026-0877) * firefox: Spoofing issue in the DOM: Copy & Paste and Drag & Drop component (CVE-2026-0890) * firefox: Clickjacking issue, information disclosure in the PDF Viewer component (CVE-2026-0887) * firefox: Sandbox escape due to incorrect boundary conditions in the Graphics component (CVE-2026-0879) * firefox: Sandbox escape due to integer overflow in the Graphics component (CVE-2026-0880) * firefox: Incorrect boundary conditions in the Graphics component (CVE-2026-0886) 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. Full details, updated packages, references, and other related information: https://errata.almalinux.org/10/ALSA-2026-2286.html This message is automatically generated, please don’t reply. For further questions, please, contact us via the AlmaLinux community chat: https://chat.almalinux.org/. Want to change your notification settings? Sign in and manage mailing lists on https://lists.almalinux.org. Kind regards, AlmaLinux Team