Missing Authentication for Critical Function in Admidio - #VU127173
Published: April 23, 2026
Vulnerability identifier: #VU127173
CSH Severity: Low
CVSS v4: 0 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-306
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to prevent compromised tokens from being revoked.
The vulnerability exists due to improper access control in the OIDC token revocation endpoint when handling revocation requests. A remote attacker can send a revocation request for a token to prevent compromised tokens from being revoked.
The /oidc/revoke endpoint returns {"revoked": true} without actually revoking the token in the database, so stolen tokens remain usable until expiry.
Affected software
Admidio
Remediation
Install security update from vendor's website.
Admidio - update to 5.0.9