VULNRABLE / Vulnerability / CVE-2026-87994

CVE-2026-87994

MEDIUM LOW open-webui GHSA

Exploit verdict: No active-exploit signal

CVSS Score

5.5

Severity

MEDIUM

EPSS

Source

GHSA

Summary

Open WebUI: Channel members can overwrite another member's message via the chat completions endpoint

What this means

CVE-2026-87994 is a medium-severity vulnerability affecting open-webui, rated CVSS 5.5. The EPSS model estimates a 0% probability of exploitation in the next 30 days. Published September 10, 2026.

View full advisory at GHSA →