{"cve":"CVE-2026-87996","nvd":{"published":"2026-09-09T22:18:47.857","modified":"2026-09-16T15:14:48.890","status":"Analyzed","description":"Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 until 0.11.1, SafePlaywrightURLLoader in backend/open_webui/retrieval/web/utils.py validated a user-controlled hostname in Python and then let the Playwright browser resolve it again in the sync and async request interceptors. An authenticated user controlling authoritative DNS could return a public address to validation and an internal address to the browser, exposing responses from internal services or cloud metadata through web search or URL ingestion. 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:H/I:N/A:N","score":7.7},"cwes":["CWE-367","CWE-918"],"references":["https://github.com/open-webui/open-webui/commit/27402ff210bfa253445720920dfb86b15a00327b","https://github.com/open-webui/open-webui/pull/28634","https://github.com/open-webui/open-webui/releases/tag/v0.11.1","https://github.com/open-webui/open-webui/security/advisories/GHSA-4v28-j6q3-5m4r","https://github.com/open-webui/open-webui/security/advisories/GHSA-4v28-j6q3-5m4r"],"products":["openwebui:open_webui"],"source":"nvd","synced_at":"2026-10-19T22:52:53.108888569+00:00"},"epss":{"cve":"CVE-2026-87996","score":0.00354,"percentile":0.2919,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-4v28-j6q3-5m4r","url":"https://osv.dev/vulnerability/GHSA-4v28-j6q3-5m4r","summary":"Open WebUI: SSRF into internal services via DNS rebinding in the Playwright web loader","modified":"2026-10-01T17:56:12.753079152Z","packages":[{"ecosystem":"PyPI","name":"open-webui","purl":"pkg:pypi/open-webui","ranges":[">=0.9.6 <0.11.1"],"fixed":["0.11.1"]}]},{"id":"PYSEC-2026-4120","url":"https://osv.dev/vulnerability/PYSEC-2026-4120","summary":"Open WebUI: SSRF into internal services via DNS rebinding in the Playwright web loader","modified":"2026-10-01T17:45:09.272427234Z","packages":[{"ecosystem":"PyPI","name":"open-webui","purl":"pkg:pypi/open-webui","ranges":[">=0.9.6 <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."]}