CVE-2026-70490

Open WebUI (self-hosted AI platform) versions 0.8.8–0.11.0 contain a flaw where the terminal WebSocket route in backend/open_webui/routers/terminals.py authenticates its own first-message JWT and omits the verified-user role gate enforced on HTTP terminal routes. As a result, accounts with pendin...

CVE-2026-70490 Open WebUI: Unapproved accounts can open terminal sessions via a WebSocket auth path missing the role check

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.8 until 0.11.0, the terminal WebSocket route in backend/openwebui/routers/terminals.py authenticated its own first-message JWT and never applied the verified-user role gate that getverifieduser enforces...

CVE-2026-70490

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.8 until 0.11.0, the terminal WebSocket route in backend/openwebui/routers/terminals.py authenticated its own first-message JWT and never applied the verified-user role gate that getverifieduser enforces...

CVE-2026-70490 Open WebUI: Unapproved accounts can open terminal sessions via a WebSocket auth path missing the role check

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.8 until 0.11.0, the terminal WebSocket route in backend/openwebui/routers/terminals.py authenticated its own first-message JWT and never applied the verified-user role gate that getverifieduser enforces...

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...

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 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: 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: 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...

open-webui terminal proxy path traversal guard bypass via 9x encoded traversal

AI assistance was used to help inspect the code and prepare this report. SummaryThe fix for GHSA-r2wg-2mcr-66rv is incomplete in v0.9.6 and current main. backend/openwebui/routers/terminals.py documents sanitizeproxypath as decoding until stable, but the implementation stops after 8 unquote passe...

Open WebUI: Terminal proxy forwards a spoofable, integrity-unbound user identity to the upstream (X-User-Id header and ws_terminal session_id query injection)

SummaryThe terminal proxy in backend/openwebui/routers/terminals.py forwards the Open WebUI user's identity to the upstream terminal server / backend coordinator as an authorization claim, with no cryptographic binding to the session that produced it. The forwarded identity is...

PYSEC-2026-3600 Open WebUI: Terminal proxy forwards a spoofable, integrity-unbound user identity to the upstream (X-User-Id header and ws_terminal session_id query injection)

Summary The terminal proxy in backend/openwebui/routers/terminals.py forwards the Open WebUI user's identity to the upstream terminal server / backend coordinator as an authorization claim, with no cryptographic binding to the session that produced it. The forwarded identity is...

PYSEC-2026-3597 open-webui terminal proxy path traversal guard bypass via 9x encoded traversal

AI assistance was used to help inspect the code and prepare this report. Summary The fix for GHSA-r2wg-2mcr-66rv is incomplete in v0.9.6 and current main. backend/openwebui/routers/terminals.py documents sanitizeproxypath as decoding until stable, but the implementation stops after 8 unquote...

PYSEC-2026-3595 Open WebUI: Realtime endpoints accept Redis-revoked JWTs after signout/backchannel logout

Summary With Redis configured, Open WebUI supports JWT revocation: POST /api/v1/auths/signout per-token jti and OIDC back-channel logout per-user revokedat record revocations in Redis, and HTTP auth getcurrentuser rejects revoked tokens with 401. The realtime authentication surfaces do not perfor...

Open WebUI: Realtime endpoints accept Redis-revoked JWTs after signout/backchannel logout

SummaryWith Redis configured, Open WebUI supports JWT revocation: POST /api/v1/auths/signout per-token jti and OIDC back-channel logout per-user revokedat record revocations in Redis, and HTTP auth getcurrentuser rejects revoked tokens with 401. The realtime authentication surfaces do not perform...

CVE-2026-70486: Improper Neutralization of Input During Web Page Generation

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-2026-70490: Incorrect Authorization

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.8 until 0.11.0, the terminal WebSocket route in backend/openwebui/routers/terminals.py authenticated its own first-message JWT and never applied the verified-user role gate that getverifieduser enforces...