CVE-2026-70482

creationtimestamp| type| source ---|---|--- 2026-08-04 20:35:12+00:00| published-proof-of-concept| https://github.com/open-webui/open-webui/security/advisories/GHSA-rq84-p6rr-vf89 2026-08-04 21:00:39+00:00| seen| https://bsky.app/profile/thehackerwire.bsky.social/post/3msbvtad5cd2n...

CVE-2026-70481

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.5.0 until 0.11.0, the standard channel message update and delete handlers accepted any caller holding write access on the channel without checking that the caller wrote the message. Because write access i...

CVE-2026-70485

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.0 until 0.11.0, Open WebUI checked whether a user-supplied URL destination was globally routable by applying ipaddress.isglobal to the literal IPv6 address without examining IPv4 addresses embedded in...

CVE-2026-70482

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.0 until 0.11.0, when ENABLEOAUTHTOKENEXCHANGE=True, /oauth/provider/token/exchange accepts a raw provider access token and validates it by calling the provider userinfo endpoint without confirming which...

CVE-2026-70486

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.0 until 0.11.0, the terminal file-preview serveUrl iframe branch always granted allow-same-origin together with allow-scripts for HTML files served from the application origin. Any authenticated user wi...

CVE-2026-70480

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.6.34 until 0.11.0, Open WebUI renders vega and vega-lite fenced code blocks in chat content by building a Vega view in the viewer browser without a restricted resource loader. Any user who can place such ...

CVE-2026-70479

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 until 0.11.0, with WEBLOADERENGINE=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...

CVE-2026-70487 Open WebUI: Cross-user file content disclosure via request-scoped direct model knowledge metadata

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.8 until 0.11.0, inline direct model metadata accepted client-supplied knowledge attachments without filtering them against the caller's read access. Any authenticated user who knew another user's file i...

CVE-2026-70487

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.8 until 0.11.0, inline direct model metadata accepted client-supplied knowledge attachments without filtering them against the caller's read access. Any authenticated user who knew another user's file i...

CVE-2026-70487 Open WebUI: Cross-user file content disclosure via request-scoped direct model knowledge metadata

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.8 until 0.11.0, inline direct model metadata accepted client-supplied knowledge attachments without filtering them against the caller's read access. Any authenticated user who knew another user's file i...

GHSA-3XPF-XQ7R-V8C5 Open WebUI: Same-origin XSS to account takeover via terminal file-preview iframe hardcoding allow-same-origin

Summary Any authenticated user with access to a terminal server could get script of their choosing to run in the Open WebUI origin itself. The HTML file preview rendered terminal-served files in an iframe whose sandbox always granted allow-same-origin alongside allow-scripts, and the file is serv...

Open WebUI: Same-origin XSS to account takeover via terminal file-preview iframe hardcoding allow-same-origin

Summary Any authenticated user with access to a terminal server could get script of their choosing to run in the Open WebUI origin itself. The HTML file preview rendered terminal-served files in an iframe whose sandbox always granted allow-same-origin alongside allow-scripts, and the file is serv...

CVE-2026-70486 Open WebUI: Same-origin XSS to account takeover via terminal file-preview iframe hardcoding allow-same-origin

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.0 until 0.11.0, the terminal file-preview serveUrl iframe branch always granted allow-same-origin together with allow-scripts for HTML files served from the application origin. Any authenticated user wi...

CVE-2026-70486

Open WebUI (self-hosted AI platform) versions 0.9.0–0.11.0 contain a Same-Origin/XSS risk in the terminal file-preview iframe: the serveUrl iframe branch granted allow-same-origin and allow-scripts for HTML files from the app origin, enabling an authenticated user with terminal server access to r...

CVE-2026-70486 Open WebUI: Same-origin XSS to account takeover via terminal file-preview iframe hardcoding allow-same-origin

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.0 until 0.11.0, the terminal file-preview serveUrl iframe branch always granted allow-same-origin together with allow-scripts for HTML files served from the application origin. Any authenticated user wi...

GHSA-8X5V-CPV7-8JJP Open WebUI: Any authenticated user can reach internal services and cloud metadata via NAT64-encoded URLs

Summary Open WebUI fetches user-supplied URLs on the server for RAG URL ingestion, URL-to-markdown conversion and web-search content retrieval, and decides whether a destination is allowed by asking whether its IP address is globally routable. That test operates on the literal IPv6 address and do...

CVE-2026-70485 Open WebUI: Any authenticated user can reach internal services and cloud metadata via NAT64-encoded URLs

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.0 until 0.11.0, Open WebUI checked whether a user-supplied URL destination was globally routable by applying ipaddress.isglobal to the literal IPv6 address without examining IPv4 addresses embedded in...

CVE-2026-70485

CVE-2026-70485 – Open WebUI : Affected versions 0.9.0 through 0.11.0 of the Open WebUI self-hosted AI platform check whether a user-provided URL is globally routable by applying ipaddress.is_global to the literal IPv6 address, without considering embedded IPv4 in transition encodings. In NAT64 de...

CVE-2026-70484 Open WebUI: Users denied the image-generation permission can still generate images via chat completions

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.7.0 until 0.11.0, the legacy chat-completions features block trusted a client-supplied imagegeneration flag and did not re-check the features.imagegeneration permission that the direct image routes and...

GHSA-RFFM-9Q57-Q649 Open WebUI: Client-side SSRF via unrestricted external resource loading in Vega/Vega-Lite chart rendering

Summary Open WebUI renders vega and vega-lite fenced code blocks in chat content by building a Vega view in the viewer's browser without a restricted resource loader. Any user who can place such a block where another user will see it can make that user's browser issue attacker-chosen outbound GET...