Open WebUI up to 0.10.x Terminal WebSocket Route terminals.py privileges management

Summaryinfo

A vulnerability, which was classified as critical, was found in Open WebUI up to 0.10.x. Affected by this vulnerability is an unknown functionality of the file backend/open_webui/routers/terminals.py of the component Terminal WebSocket Route. The manipulation results in privileges management. This vulnerability was named CVE-2026-70490. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as critical, was found in Open WebUI up to 0.10.x. Affected is some unknown functionality of the file backend/open_webui/routers/terminals.py of the component Terminal WebSocket Route. The manipulation with an unknown input leads to a privileges management vulnerability. CWE is classifying the issue as CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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/open_webui/routers/terminals.py authenticated its own first-message JWT and never applied the verified-user role gate that get_verified_user enforces on HTTP terminal routes. An account whose role is pending, including a registered but unapproved account or an account deactivated back to pending, can open an interactive terminal session when at least one terminal server is configured and its access grants cover the account. This loses the account-approval boundary for terminal access while the HTTP terminal routes correctly reject the same account. This issue is fixed in 0.11.0.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-70490 since 08/04/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1068.

Upgrading to version 0.11.0 eliminates this vulnerability.

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Productinfo

Name

• Open WebUI

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9
• 0.10

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CPE 2.2info

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