Description
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 until 0.11.0, with WEB_LOADER_ENGINE=playwright, the Playwright web loader validates only the top-level page request and lets sub-resource requests pass unvalidated. A page supplied by an authenticated user can use JavaScript to reach blocked internal addresses, and returned DOM can include data read from those addresses in web-search or RAG output. This issue is fixed in 0.11.0.
Affected products
openwebui: open webui
References5
- github.com/open-webui/open-webui/pull/27526 PatchVendor Advisory
- github.com/open-webui/open-webui/security/advisories/GHSA-w2rx-… ExploitVendor Advisory
- github.com/open-webui/open-webui/security/advisories/GHSA-w2rx-… ExploitVendor Advisory
- github.com/open-webui/open-webui/commit/bef63a2ae915571d50d2722… Patch
- github.com/open-webui/open-webui/releases/tag/v0.11.0 Release Notes
Metrics
- CVSS 3.1
-
7.7
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N - EPSS — exploit probability
- 0% percentile: 41 · as of 13 November 2026
- CWE
- CWE-918
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.