CVE-2026-109286

Open WebUI from 0.7.0 before 0.11.4 contains a cross-origin message handling vulnerability in SyncStatsModal that allows any website to steal a signed-in user's session token by posting unvalidated verify:chat messages. Attackers can supply a path-traversal chat id redirecting the authenticated stats export request to the auths endpoint, receiving the victim's JWT for full API access.

CVSS v3 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/open-webui/open-webui/security/advisories/GHSA-vpq8-f445-hcq7
https://www.vulncheck.com/advisories/open-webui-0.7.0-before-0.11.4-session-token-theft-via-syncstatsmodal
https://github.com/open-webui/open-webui/security/advisories/GHSA-vpq8-f445-hcq7

Configurations

No configuration.

History

18 Oct 2026, 12:17

Type	Values Removed	Values Added
References	~~() https://github.com/open-webui/open-webui/security/advisories/GHSA-vpq8-f445-hcq7 -~~	() https://github.com/open-webui/open-webui/security/advisories/GHSA-vpq8-f445-hcq7 -

12 Oct 2026, 17:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-12 17:17

Updated : 2026-10-18 12:17

NVD link : CVE-2026-109286

Mitre link : CVE-2026-109286

CVE.ORG link : CVE-2026-109286

JSON object : View

Products Affected

No product.

CWE

CWE-346

Origin Validation Error

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