{"cve":"CVE-2026-88001","nvd":{"published":"2026-09-09T22:18:48.930","modified":"2026-09-14T19:56:01.227","status":"Analyzed","description":"Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.5 until 0.11.1, server-side web fetches did not reapply WEB_FETCH_FILTER_LIST or private-address controls to HTTP redirect destinations when AIOHTTP_CLIENT_ALLOW_REDIRECTS was enabled. An authenticated user could redirect the aiohttp and requests fetch paths to excluded hosts, loopback, private networks, or cloud metadata services and route resulting content into web search, URL ingestion, page-fetch tools, or chat image processing. This issue is fixed in version 0.11.1.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N","score":5.0},"cwes":["CWE-918"],"references":["https://github.com/open-webui/open-webui/commit/e3e4bd87df6fc629e7e22081d980d55a7632b8b7","https://github.com/open-webui/open-webui/pull/27823","https://github.com/open-webui/open-webui/releases/tag/v0.11.1","https://github.com/open-webui/open-webui/security/advisories/GHSA-5x7x-4c3c-qf5w","https://github.com/open-webui/open-webui/security/advisories/GHSA-5x7x-4c3c-qf5w"],"products":["openwebui:open_webui"],"source":"nvd","synced_at":"2026-10-19T22:52:53.108888569+00:00"},"epss":{"cve":"CVE-2026-88001","score":0.00378,"percentile":0.31836,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-5x7x-4c3c-qf5w","url":"https://osv.dev/vulnerability/GHSA-5x7x-4c3c-qf5w","summary":"Open WebUI: Server-side fetches reach blocked and internal hosts via unvalidated HTTP redirect targets","modified":"2026-09-10T12:25:28.872144403Z","packages":[{"ecosystem":"PyPI","name":"open-webui","purl":"pkg:pypi/open-webui","ranges":[">=0.9.5 <0.11.1"],"fixed":["0.11.1"]}]},{"id":"PYSEC-2026-3878","url":"https://osv.dev/vulnerability/PYSEC-2026-3878","summary":"Open WebUI: Server-side fetches reach blocked and internal hosts via unvalidated HTTP redirect targets","modified":"2026-09-10T12:15:07.011695232Z","packages":[{"ecosystem":"PyPI","name":"open-webui","purl":"pkg:pypi/open-webui","ranges":[">=0.9.5 <0.11.1"],"fixed":["0.11.1"]}]}],"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."]}