Cross-site scripting in Admidio - #VU138936
Published: July 21, 2026
Vulnerability identifier: #VU138936
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Green
CVE-ID: N/A
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Admidio
Affected software:
Admidio
Admidio
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary JavaScript in the browser of a user who visits a crafted SSO/SAML URL.
The vulnerability exists due to cross-site scripting in the modules/sso/index.php SSO/SAML endpoint when echoing exception messages generated during SAML request processing. A remote attacker can send a specially crafted SSO/SAML request to execute arbitrary JavaScript in the browser of a user who visits a crafted SSO/SAML URL.
Only instances with the SAML SSO feature enabled are vulnerable.
Remediation
Install security update from vendor's website.