All vulnerabilities
CVE-2026-109289GHSA-6g45-8g27-fh8q

open-webui: Open WebUI 0.8.8 before 0.11.4 Improper Session Revocation via Terminal WebSocket

open-webui open-webui
Open in ThreatlineRecord JSON
CVSS
5.3Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.21%Chance of exploitation activity in the next 30 days, higher than 11% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in0.11.4Fixed versionCVE List
Published12 Oct 2026Updated 23 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

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.

Text from CVE List

Affected versions 2

  • open-webuiaffected: 0.8.8 before 0.11.4CVE List
  • open-webuiunaffected: 0.11.4CVE List

References 2