What’s Vulnerable › Vulnerabilities

CVE-2026-109289: Open WebUI 0.8.8 before 0.11.4 Improper Session Revocation via Terminal WebSocket

• Severity: medium (CVSS 6.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-12 · updated 2026-10-13
• Weakness: CWE-613

Description

Open WebUI from 0.8.8 before 0.11.4 contains an improper authorization vulnerability that allows deactivated users to keep executing terminal commands through an already open terminal WebSocket. Because the terminal proxy route in terminals.py checks access only on the first message, deactivated users can keep running commands and reading or writing files on the terminal server.

Affected products

• open-webui: from 0.8.8 before 0.11.4 — fixed in 0.11.4

How to fix

Upgrade to a fixed version: open-webui 0.11.4. Check the vendor advisory for mitigations.

References

• https://github.com/open-webui/open-webui/security/advisories/GHSA-6g45-8g27-fh8q
• https://www.vulncheck.com/advisories/open-webui-0.8.8-before-0.11.4-improper-session-revocation-via-terminal-websocket

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