{"cve":"CVE-2026-59215","nvd":{"published":"2026-07-09T17:17:02.340","modified":"2026-07-13T12:27:12.263","status":"Analyzed","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","score":3.1},"cwes":["CWE-639"],"references":["https://github.com/open-webui/open-webui/commit/a66477b7104c5d141ce7bffaea424b43e7666ef1","https://github.com/open-webui/open-webui/pull/25766","https://github.com/open-webui/open-webui/releases/tag/v0.10.0","https://github.com/open-webui/open-webui/security/advisories/GHSA-73x5-h92w-xc2j","https://github.com/open-webui/open-webui/security/advisories/GHSA-73x5-h92w-xc2j"],"products":["openwebui:open_webui"],"source":"nvd","synced_at":"2026-10-19T22:44:02.134301115+00:00"},"epss":{"cve":"CVE-2026-59215","score":0.00323,"percentile":0.25381,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-73x5-h92w-xc2j","url":"https://osv.dev/vulnerability/GHSA-73x5-h92w-xc2j","summary":"Open WebUI: Private channel messages can be disclosed through cross-channel thread parent_id binding","modified":"2026-08-04T14:40:59.584276302Z","packages":[{"ecosystem":"PyPI","name":"open-webui","purl":"pkg:pypi/open-webui","ranges":["<0.10.0"],"fixed":["0.10.0"]}]},{"id":"PYSEC-2026-3591","url":"https://osv.dev/vulnerability/PYSEC-2026-3591","summary":"Open WebUI: Private channel messages can be disclosed through cross-channel thread parent_id binding","modified":"2026-08-04T14:30:28.512935214Z","packages":[{"ecosystem":"PyPI","name":"open-webui","purl":"pkg:pypi/open-webui","ranges":["<0.10.0"],"fixed":["0.10.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}