{"id":"CVE-2026-57501","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-57501","generatedAt":"2026-10-28T02:22:51.176Z","title":"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…","description":"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'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.","published":"2026-07-09T23:17:05.000Z","lastModified":"2026-10-25T15:10:00.000Z","status":"Awaiting Analysis","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":0,"severity":"NONE","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:N"},"cwe":["CWE-266"],"affected":[],"epss":{"score":0.00506,"percentile":0.4291,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.51%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://github.com/zen-browser/desktop/commit/44f7616238208200547c7df500d945752d7b6379","source":"security-advisories@github.com"},{"url":"https://github.com/zen-browser/desktop/releases/tag/1.21.5b","source":"security-advisories@github.com"},{"url":"https://github.com/zen-browser/desktop/security/advisories/GHSA-vpvg-hp3v-rm5q","source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-57501","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}