ALSA-2026:49921 Important: thunderbird security update

Mozilla Thunderbird is a standalone mail and newsgroup client. Security Fixes: 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...

Linux Distros Unpatched Vulnerability : CVE-2026-16377

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Mitigation bypass in the PDF Viewer component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13...

CVE-2018-5157

Same-origin protections for the PDF viewer can be bypassed, allowing a malicious site to intercept messages meant for the viewer. This could allow the site to retrieve PDF files restricted to viewing by an authenticated user on a third-party website. This vulnerability affects Firefox ESR 52.8 an...

CVE-2018-5157

Same-origin protections for the PDF viewer can be bypassed, allowing a malicious site to intercept messages meant for the viewer. This could allow the site to retrieve PDF files restricted to viewing by an authenticated user on a third-party website. This vulnerability affects Firefox ESR 52.8 an...