Apereo CAS has inefficient regular expression complexity
A vulnerability was found in Apereo CAS 5.2.6. It has been classified as problematic. This affects the function ResponseEntity of the file cas-5.2.6\webapp-mgmt\cas-management-webapp-support\src\main\java\org\apereo\cas\mgmt\services\web\ManageRegisteredServicesMultiActionController.java. The manipulation of the argument Query leads to inefficient regular expression complexity. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | org.apereo.cas:cas-management-webapp-support | <= 5.2.6 | no fix |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L- Weakness (CWE)
CWE-400- Platform
- Java / Kotlin (Maven)
- Package
org.apereo.cas:cas-management-webapp-support- Disclosed
- 27.04.2025
- Updated
- 11.10.2026 12:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-8rx4-fxq5-vj4v - CC BY 4.0
Vulnerability history: org.apereo.cas:cas-management-webapp-support
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 2
- First → latest
- 04.2025 04.2025
- Without a fix
- 2
- Exploited in attacks
- 0
Severity breakdown
- Medium 1
- Low 1
Disclosures per year
- 2025: 2
- 2026: 0
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Apereo CAS has inefficient regular expression complexity this entry
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