{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-87997","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-09-09T19:19:27.405Z","datePublished":"2026-09-09T21:30:09.334Z","dateUpdated":"2026-09-14T13:44:20.104Z"},"containers":{"cna":{"title":"Open WebUI: Any authenticated user can inject chats into another user's folder via chat completions","problemTypes":[{"descriptions":[{"cweId":"CWE-639","lang":"en","description":"CWE-639: Authorization Bypass Through User-Controlled Key","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-862","lang":"en","description":"CWE-862: Missing Authorization","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/open-webui/open-webui/security/advisories/GHSA-3pf7-q2g3-wj28","tags":["x_refsource_CONFIRM"],"url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-3pf7-q2g3-wj28"},{"name":"https://github.com/open-webui/open-webui/pull/28366","tags":["x_refsource_MISC"],"url":"https://github.com/open-webui/open-webui/pull/28366"},{"name":"https://github.com/open-webui/open-webui/commit/d9e23b90c100d19b00270aea3cde0501d2354a6c","tags":["x_refsource_MISC"],"url":"https://github.com/open-webui/open-webui/commit/d9e23b90c100d19b00270aea3cde0501d2354a6c"},{"name":"https://github.com/open-webui/open-webui/releases/tag/v0.11.1","tags":["x_refsource_MISC"],"url":"https://github.com/open-webui/open-webui/releases/tag/v0.11.1"}],"affected":[{"vendor":"open-webui","product":"open-webui","versions":[{"version":">= 0.10.0, < 0.11.1","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-09-09T21:30:09.334Z"},"descriptions":[{"lang":"en","value":"Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.10.0 until 0.11.1, POST /api/chat/completions and POST /api/v1/chat/completions in backend/open_webui/main.py copied a client-supplied folder_id into a new chat without applying the folder write-access check used by the dedicated chat routes. An authenticated user who knew a shared folder identifier could inject an attacker-controlled chat into a folder where the user had read-only or no write access, causing the entry to appear to authorized folder readers. This issue is fixed in version 0.11.1."}],"source":{"advisory":"GHSA-3pf7-q2g3-wj28","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-3pf7-q2g3-wj28","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-14T13:43:57.477520Z","id":"CVE-2026-87997","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-14T13:44:20.104Z"}}]}}