{"id":"CVE-2026-109287","title":"Open WebUI from 0.9.6 before 0.11.4 contains an authorization flaw where the knowledge base file listing does not verify that a supplied directory_id belongs to the requested knowledge base","summary":"Open WebUI from 0.9.6 before 0.11.4 contains an authorization flaw where the knowledge base file listing does not verify that a supplied directory_id belongs to the requested knowledge base. Users with read access to any knowledge base c…","severity":"medium","cvss":4.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","cwe":["CWE-639","CWE-863"],"vendor":"open-webui","product":"open-webui","affected":["open-webui >= 0.9.6 < 0.11.4"],"published":"2026-10-12","updated":"2026-10-15","sourceUpdated":"2026-10-15T15:55:45.630","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-109287","references":[{"url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-jx3w-3pqq-7f3w","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/open-webui-0.9.6-before-0.11.4-information-disclosure-via-unscoped-directory-id","label":"disclosure@vulncheck.com"},{"url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-jx3w-3pqq-7f3w","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"epss":0.00278,"epssPercentile":0.20158,"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-15T02:38:04.444019Z"},"ingestedAt":"2026-10-12T18:00:08.189Z","slug":"CVE-2026-109287","body":"## Overview\n\nOpen WebUI from 0.9.6 before 0.11.4 contains an authorization flaw where the knowledge base file listing does not verify that a supplied directory_id belongs to the requested knowledge base. Users with read access to any knowledge base can supply a retained foreign directory UUID to GET /api/v1/knowledge/{id}/files. The returned breadcrumbs expose folder names, owner user ids and knowledge base ids of that directory and all its ancestors.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":36,"depthScoreParts":{"impact":23.7,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":222049,"id":"CVE-2026-109287","ts":1792043628154,"field":"exploit_available","old":"false","new":"true"}]}