CVE-2026-87016 Open WebUI - Authentication Bypass

Open WebUI 0.6.41 to 0.11.1 contains an authentication bypass caused by improper JSON matching compiled to SQL LIKE on SQLite, letting attackers impersonate administrator accounts, exploit requires crafted OAuth subject with wildcard characters.

CVSS base score 8.1 /10
High
CISA KEV
Not listed
Public exploit
Proof of concept available
Authentication
Not required
EPSS
0.60% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Broken Authentication
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
9 September 2026
Updated
15 October 2026
Weakness
CWE-155

Vendor fix

Upgrade to version 0.11.1 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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