{"id":"CVE-2026-87016","title":"Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform","summary":"Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.6.41 until 0.11.1, get_user_by_oauth_sub and get_user_by_scim_external_id in backend/open_webui/models/users.py used JSON contains matching that…","severity":"high","cvss":8.1,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-155","CWE-287"],"vendor":"openwebui","product":"open_webui","affected":["open_webui >= 0.6.41, < 0.11.1"],"patched":["open_webui 0.11.1"],"published":"2026-09-09","updated":"2026-09-15","sourceUpdated":"2026-09-15T15:29:13.380","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-87016","references":[{"url":"https://github.com/open-webui/open-webui/commit/73c1f5806aeb6345dad5de8f5aa26d1f3d0bef80","label":"security-advisories@github.com"},{"url":"https://github.com/open-webui/open-webui/pull/28624","label":"security-advisories@github.com"},{"url":"https://github.com/open-webui/open-webui/releases/tag/v0.11.1","label":"security-advisories@github.com"},{"url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-wpmr-8h3q-fwj7","label":"security-advisories@github.com"},{"url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-wpmr-8h3q-fwj7","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"epss":0.0035,"epssPercentile":0.28584,"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"total","timestamp":"2026-09-14T13:43:02.743594Z"},"ingestedAt":"2026-09-14T15:23:07.420Z","slug":"CVE-2026-87016","body":"## Overview\n\nOpen WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.6.41 until 0.11.1, get_user_by_oauth_sub and get_user_by_scim_external_id in backend/open_webui/models/users.py used JSON contains matching that compiled to SQL LIKE substring matching on SQLite. An OAuth subject containing percent or underscore wildcard characters could resolve to a different stored identity, potentially selecting an administrator account and issuing the attacker that account's session; PostgreSQL deployments were not affected. This issue is fixed in version 0.11.1.\n\n## Affected\n\n- `open_webui >= 0.6.41, < 0.11.1`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `open_webui 0.11.1`","depth":"midnight","depthScore":57,"depthScoreParts":{"impact":44.6,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}