{"id":"CVE-2026-57501","title":"Zen is a firefox-based browser","summary":"Zen is a firefox-based browser. Prior to 1.21.5b, Zen's glance and split-view context-menu actions, Open link in glance and Split link in new tab, load a page-controlled link URL with the System principal instead of the originating page'…","severity":"none","cvss":0,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:N","cwe":["CWE-266"],"published":"2026-07-09","updated":"2026-07-10","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-57501","references":[{"url":"https://github.com/zen-browser/desktop/commit/44f7616238208200547c7df500d945752d7b6379","label":"security-advisories@github.com"},{"url":"https://github.com/zen-browser/desktop/releases/tag/1.21.5b","label":"security-advisories@github.com"},{"url":"https://github.com/zen-browser/desktop/security/advisories/GHSA-vpvg-hp3v-rm5q","label":"security-advisories@github.com"}],"tags":["nvd"],"epss":0.00506,"epssPercentile":0.4223,"ingestedAt":"2026-07-11T20:15:25.792Z","slug":"CVE-2026-57501","body":"## Overview\n\nZen is a firefox-based browser. Prior to 1.21.5b, Zen's glance and split-view context-menu actions, Open link in glance and Split link in new tab, load a page-controlled link URL with the System principal instead of the originating page's principal, allowing a malicious web page to place a link to a file URL that can load with System privileges when opened through either context-menu item and bypass the content-to-file security check that blocks an ordinary click. This issue is fixed in version 1.21.5b.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}