{"id":"CVE-2026-59215","aliases":["GHSA-73x5-h92w-xc2j","PYSEC-2026-3591"],"url":"https://o3.security/vulnerability/CVE-2026-59215","summary":"Open WebUI: Private channel messages can be disclosed through cross-channel thread parent_id binding","details":"Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.10.0, channel thread parent and reply handling did not bind parent_id to the channel in the URL, allowing an authenticated user to reference a message from another private or DM channel and disclose thread context across channels. This issue is fixed in version 0.10.0.","published":"2026-07-09T16:57:24.325Z","modified":"2026-08-12T03:51:13.500430530Z","cvss":{"score":3.1,"severity":"LOW","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N"},"epss":{"score":0.00323,"percentile":0.24958,"asOf":"2026-09-06"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"open-webui","fixedVersion":"0.10.0"}],"fix":{"url":"https://github.com/open-webui/open-webui/commit/a66477b7104c5d141ce7bffaea424b43e7666ef1","label":"open-webui/open-webui@a66477b"},"references":[{"type":"WEB","url":"https://github.com/open-webui/open-webui/releases/tag/v0.10.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59215.json"},{"type":"ADVISORY","url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-73x5-h92w-xc2j"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59215"},{"type":"FIX","url":"https://github.com/open-webui/open-webui/commit/a66477b7104c5d141ce7bffaea424b43e7666ef1"},{"type":"FIX","url":"https://github.com/open-webui/open-webui/pull/25766"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:13.500430530Z"}}