All vulnerabilities
CVE-2026-109292GHSA-gqfh-jxvw-74rp

open-webui: Open WebUI 0.6.27 before 0.11.4 Session Token Disclosure via OAuth-Mode Connections

open-webui open-webui
Open in ThreatlineRecord JSON
CVSS
7.6High
ExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 15 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.32%Chance of exploitation activity in the next 30 days, higher than 24% 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 0.6.27 before 0.11.4 contains an information disclosure vulnerability that allows destination servers to obtain user session cookies by receiving the full browser cookie jar on OAuth-mode connections. Operators of OpenAI-compatible connections, OpenAPI tool servers or terminal servers can capture forwarded session cookies from routine requests and replay them to hijack accounts, including administrators.

Text from CVE List

Affected versions 2

  • open-webuiaffected: 0.6.27 before 0.11.4CVE List
  • open-webuiunaffected: 0.11.4CVE List

References 5