Apereo CAS Groovy Code RegisteredServiceSimpleFormController.java saveService code injection
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- High
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-94.
Summary
A vulnerability was found in Apereo CAS 5.2.6 and classified as critical. Affected by this issue is the function saveService of the file cas-5.2.6\webapp-mgmt\cas-management-webapp-support\src\main\java\org\apereo\cas\mgmt\services\web\RegisteredServiceSimpleFormController.java of the component Groovy Code Handler. The manipulation leads to code injection. The attack may be launched remotely. The complexity of an attack is rather high. The exploitation is known to be difficult. 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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Apereo | CAS | 5.2.6 | — | No fix listed | CNA |
| — | org.apereo.cas:cas-management-webapp-support (Maven) | up to 5.2.6 | — | No fix listed | GHSA-37pq-893f-g7q5 |
- CAS VendorApereo Affected 5.2.6 Fixed in — No fix listed CNA
- org.apereo.cas:cas-management-webapp-support (Maven) Vendor— Affected up to 5.2.6 Fixed in — No fix listed GHSA-37pq-893f-g7q5
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-3984
- 2026-10-03 Alias added: GHSA-37pq-893f-g7q5
References
More Apereo Central Authentication Service vulnerabilities
- TI-2023-13363 LDAP password leak in Apereo CAS - GHSL-2023-009 CVSS 3.1HIGH 7.5
- TI-2024-10382 Apereo CAS login session expiration CVSS 4.0MEDIUM 6.3
- TI-2024-10383 Apereo CAS 2FA login improper authentication CVSS 4.0MEDIUM 5.3
- TI-2024-10381 Apereo CAS login redirect CVSS 4.0MEDIUM 5.3
- TI-2024-04097 CAS <= 1.0.0 - Unauthenticated SSRF CVSS 3.1CRITICAL 9.1
- TI-2023-04254 MFA bypass in Apereo CAS CVSS 3.1CRITICAL 9.8
Sources
- CVE-2025-3984 · CVE Program
- CVE-2025-3984 · NVD
- FIRST EPSS
- GHSA-37pq-893f-g7q5 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences