{"cve":"CVE-2026-44571","nvd":{"published":"2026-05-15T22:16:53.473","modified":"2026-06-17T10:50:48.810","status":"Analyzed","description":"Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.6, in standard channels (i.e., channels whose channel.type is neither group nor dm), the endpoint POST /api/v1/channels/{channel_id}/messages/{message_id}/update can be accessed with read permission only. When access_control is set to None, the authorization check has_access(..., type=\"read\") evaluates to True, allowing users who are not the message owner to update messages. As a result, unauthorized modification of other users’ messages is possible. This vulnerability is fixed in 0.8.6.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","score":6.5},"cwes":["CWE-862"],"references":["https://github.com/open-webui/open-webui/security/advisories/GHSA-jgj3-r8hr-9pjw","https://github.com/open-webui/open-webui/security/advisories/GHSA-jgj3-r8hr-9pjw"],"products":["openwebui:open_webui"],"source":"nvd","synced_at":"2026-10-19T22:35:16.954578616+00:00"},"epss":{"cve":"CVE-2026-44571","score":0.00277,"percentile":0.20179,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-jgj3-r8hr-9pjw","url":"https://osv.dev/vulnerability/GHSA-jgj3-r8hr-9pjw","summary":"Open WebUI's Improper Authorization in Standard Channels Allows Message Updates with Read Permission","modified":"2026-07-13T16:42:41.009567224Z","packages":[{"ecosystem":"PyPI","name":"open-webui","purl":"pkg:pypi/open-webui","ranges":["<0.8.6"],"fixed":["0.8.6"]}]},{"id":"PYSEC-2026-2739","url":"https://osv.dev/vulnerability/PYSEC-2026-2739","summary":"Open WebUI's Improper Authorization in Standard Channels Allows Message Updates with Read Permission","modified":"2026-07-13T16:32:16.498365824Z","packages":[{"ecosystem":"PyPI","name":"open-webui","purl":"pkg:pypi/open-webui","ranges":["<0.8.6"],"fixed":["0.8.6"]}]}],"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."]}