{"id":"CVE-2026-59714","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-59714","generatedAt":"2026-10-28T00:20:19.468Z","title":"Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform.","description":"Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.5 before 0.10.0, any authenticated user can overwrite the content of a message in a channel they do not belong to (including private and DM channels) by sending a chat completion request with a channel:-prefixed chat_id and a target message_id. The channel: path routes pipeline output through _make_channel_emitter, which writes to the Messages table using the caller-supplied message_id without binding it to the channel. This issue is fixed in version 0.10.0.","published":"2026-08-13T20:17:23.000Z","lastModified":"2026-09-18T20:09:02.000Z","status":"Deferred","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":7.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L"},"cwe":["CWE-862"],"affected":[],"epss":{"score":0.00478,"percentile":0.40965,"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":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.48%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/open-webui/open-webui/commit/ac3449cac91e62b08a7c28e54fcd044d14dea791","source":"security-advisories@github.com"},{"url":"https://github.com/open-webui/open-webui/pull/26385","source":"security-advisories@github.com"},{"url":"https://github.com/open-webui/open-webui/releases/tag/v0.10.0","source":"security-advisories@github.com"},{"url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-x2ff-v5v8-m75m","source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-59714","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."}