CVE-2025-3986: Cas server core configuration metadata repository Apereo CAS Has Inefficient Regular Vulnerability
MODERATECVE-2025-3986 is a MODERATE (CVSS 4.3) apereo cas has inefficient regular vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Cas server core configuration metadata repository libraries in the Maven ecosystem. The issue involves apereo cas has inefficient regular expression complexity. Remediation is available in the latest vendor maintenance releases.
CVE-2025-3986 at a Glance
Security Impact
CVSS: 4.3
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L).
How to Fix CVE-2025-3986
To remediate this vulnerability, upgrade all affected Cas server core configuration metadata repository dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
<dependency>
<groupId>org.apereo.cas</groupId>
<artifactId>cas-server-core-configuration-metadata-repository</artifactId>
<version>Latest secure release</version>
</dependency>Run the following command in your project directory to verify that all resolved dependencies use the patched release:
mvn dependency:tree -Dincludes=org.apereo.casHow to Check if You Are Affected
To determine whether your Java application is affected by CVE-2025-3986, inspect your build dependencies using the Maven Dependency Plugin:
mvn dependency:tree -Dincludes=org.apereo.casAnalyze the terminal output to locate any version of Cas server core configuration metadata repository in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.
Note: The mvn dependency:tree -Dincludes=org.apereo.cas command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-400: Uncontrolled Resource Consumption, where the product does not properly control the allocation and maintenance of a limited resource. In Cas server core configuration metadata repository, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2025-3986 Affected Cas server core configuration metadata repository Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
org.apereo.cas:cas-server-core-configuration-metadata-repository
|
Maven |
≤ 5.2.6
|
|
References
Frequently Asked Questions
What is CVE-2025-3986?
Which Cas server core configuration metadata repository versions are affected?
What version fixes CVE-2025-3986?
Is cas-server-core-configuration-metadata-repository affected?
What is the CVSS score of CVE-2025-3986?
What CWE is associated with CVE-2025-3986?
How can I check Maven dependencies for CVE-2025-3986?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-mvwq-hcrj-f5x9",
"modified" : "2025-04-28T20:54:43Z",
"published" : "2025-04-27T21:34:48Z",
"aliases" : [ "CVE-2025-3986" ],
"summary" : "Apereo CAS has inefficient regular expression complexity",
"details" : "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.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"
}, {
"type" : "CVSS_V4",
"score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Maven",
"name" : "org.apereo.cas:cas-server-core-configuration-metadata-repository"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"last_affected" : "5.2.6"
} ]
} ]
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-3986"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/apereo/cas"
}, {
"type" : "WEB",
"url" : "https://vuldb.com/?ctiid.306322"
}, {
"type" : "WEB",
"url" : "https://vuldb.com/?id.306322"
}, {
"type" : "WEB",
"url" : "https://vuldb.com/?submit.557473"
}, {
"type" : "WEB",
"url" : "https://wx.mail.qq.com/s?k=rk-m8GwRMVMcOjBY1a"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-400" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2025-04-28T20:54:43Z",
"nvd_published_at" : "2025-04-27T21:15:16Z"
}
}