CVE-2026-74960

creationtimestamp| type| source ---|---|--- 2026-08-19 04:46:07+00:00| seen| https://www.hkcert.org/security-bulletin/mozilla-products-multiple-vulnerabilities20260819...

Linux Distros Unpatched Vulnerability : CVE-2026-74960

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Site isolation issue in the WebExtensions component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154,...

CVE-2026-74960

Site isolation issue in the WebExtensions component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1...

DEBIAN-CVE-2026-74960

Site isolation issue in the WebExtensions component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1...

CVE-2026-74960

Site isolation issue in the WebExtensions component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1...

UBUNTU-CVE-2026-74960

Site isolation issue in the WebExtensions component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1...

CVE-2026-74960 Site isolation issue in the WebExtensions component

Site isolation issue in the WebExtensions component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1...

CVE-2026-74960

CVE-2026-74960 is a site isolation issue in the WebExtensions component of Mozilla Firefox and Thunderbird. The vulnerability allows a web extension to bypass site isolation boundaries, potentially enabling cross-origin data access. It carries a CVSS 3.1 score of 8.1 (HIGH) with a vector of AV:N/...