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TI-2025-03529 Aliases CVE-2025-3986GHSA-mvwq-hcrj-f5x9

Apereo CAS CasConfigurationMetadataServerController.java redos

Priority LOW 25CWE-1333Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-1333.

Summary

A vulnerability was found in Apereo CAS 5.2.6. It has been declared as problematic. This vulnerability affects unknown code of the file cas-5.2.6\core\cas-server-core-configuration-metadata-repository\src\main\java\org\apereo\cas\metadata\rest\CasConfigurationMetadataServerController.java. The manipulation of the argument Name leads to inefficient regular expression complexity. The attack can be initiated 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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00652 51st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

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

VendorProductAffected versionsFixed inStatusSource
ApereoCAS5.2.6—No fix listedCNA
—org.apereo.cas:cas-server-core-configuration-metadata-repository (Maven)up to 5.2.6—No fix listedGHSA-mvwq-hcrj-f5x9
  • CAS VendorApereo Affected 5.2.6 Fixed in — No fix listed CNA
  • org.apereo.cas:cas-server-core-configuration-metadata-repository (Maven) Vendor— Affected up to 5.2.6 Fixed in — No fix listed GHSA-mvwq-hcrj-f5x9

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:apereo:central_authentication_service:5.2.6:*:*:*:*:*:*:*5.2.6VulnerableApereo
  • cpe:2.3:a:apereo:central_authentication_service:5.2.6:*:*:*:*:*:*:* Versions 5.2.6 Vulnerable ·Apereo

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-3986
  2. 2026-10-03 Alias added: GHSA-mvwq-hcrj-f5x9
  3. 2026-10-23 EPSS moved to the 50th–90th percentile

References

Exploit 1

Advisory 1

Other 1

  • 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
See all 12 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences