RLSA-2026:47101

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

Security Fix(es):

• firefox: thunderbird: Site isolation issue in the DOM: Navigation component (CVE-2026-15719)

• firefox: thunderbird: Invalid pointer in the JavaScript: WebAssembly component (CVE-2026-15718)

• firefox: thunderbird: Mitigation bypass in the Enterprise Policies component (CVE-2026-16390)

• firefox: thunderbird: Incorrect boundary conditions in the Audio/Video: cubeb component (CVE-2026-16350)

• firefox: thunderbird: Information disclosure in the Storage: IndexedDB component (CVE-2026-16391)

• firefox: thunderbird: Site isolation issue in the Networking: HTTP component (CVE-2026-16375)

• firefox: thunderbird: Sandbox escape due to use-after-free in the Disability Access APIs component (CVE-2026-16356)

• firefox: thunderbird: JIT miscompilation in the JavaScript: WebAssembly component (CVE-2026-16363)

• firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 140.13 and Firefox 153 (CVE-2026-16412)

• firefox: thunderbird: Same-origin policy bypass in the Networking: DNS component (CVE-2026-16381)

• firefox: thunderbird: JIT miscompilation in the JavaScript Engine: JIT component (CVE-2026-16355)

• firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 115.38 and Firefox ESR 140.13 (CVE-2026-16361)

• firefox: thunderbird: Sandbox escape due to use-after-free in the Disability Access APIs component (CVE-2026-16352)

• firefox: thunderbird: Incorrect boundary conditions in the JavaScript: WebAssembly component (CVE-2026-16368)

• firefox: thunderbird: Mitigation bypass in the PDF Viewer component (CVE-2026-16377)

• firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 115.38, Firefox ESR 140.13 and Firefox 153 (CVE-2026-16360)

• firefox: thunderbird: Use-after-free in the WebRTC: Audio/Video component (CVE-2026-16362)

• firefox: thunderbird: Site isolation issue in the Graphics: WebRender component...