What’s Vulnerable › Vulnerabilities

CVE-2025-3986: Apereo CAS CasConfigurationMetadataServerController.java redos

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-04-27 · updated 2026-06-17
• Weakness: CWE-400

Description

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.

Affected products

• Apereo Central Authentication Service: 5.2.6

References

• https://vuldb.com/?ctiid.306322
• https://vuldb.com/?id.306322
• https://vuldb.com/?submit.557473
• https://wx.mail.qq.com/s?k=rk-m8GwRMVMcOjBY1a

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