{"id":"CVE-2026-72837","title":"File Browser versions before 2.63.20 fail to honor the createUserDir isolation in proxy and hook authentication auto-provisioning paths","summary":"File Browser versions before 2.63.20 fail to honor the createUserDir isolation in proxy and hook authentication auto-provisioning paths. Attackers with valid upstream-authenticated credentials can read, modify, delete, and share files be…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-284"],"published":"2026-08-14","updated":"2026-09-08","sourceUpdated":"2026-09-08T20:32:39.347","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-72837","references":[{"url":"https://github.com/filebrowser/filebrowser/security/advisories/GHSA-j7jh-37pf-mf8h","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/file-browser-before-privilege-escalation-via-proxy-authentication","label":"disclosure@vulncheck.com"}],"tags":["nvd"],"epss":0.00558,"epssPercentile":0.44157,"ingestedAt":"2026-09-08T21:11:12.278Z","slug":"CVE-2026-72837","body":"## Overview\n\nFile Browser versions before 2.63.20 fail to honor the createUserDir isolation in proxy and hook authentication auto-provisioning paths. Attackers with valid upstream-authenticated credentials can read, modify, delete, and share files belonging to other users by exploiting the server root scope assignment.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":49,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}