CVE-2025-67635: Jenkins core Denial of Service Vulnerability

HIGH
Advisory Identifier: GHSA-9p56-p6mw-w8qc
CVSS 7.5
CWE-404
Published
Advisory Summary

CVE-2025-67635 is a HIGH (CVSS 7.5) denial of service vulnerability (CWE-404: Improper Resource Shutdown or Release) affecting Jenkins core libraries in the Maven ecosystem. The issue involves jenkins has a denial of service vulnerability in http-based cli. Remediation is available by upgrading affected packages to version 2.541, 2.528.3.

CVE-2025-67635 at a Glance

CVE Identifier CVE-2025-67635
GHSA Identifier GHSA-9p56-p6mw-w8qc
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-404: Improper Resource Shutdown or Release
Affected Product Jenkins core
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2025-67635

To remediate this vulnerability, upgrade all affected Jenkins core dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

org.jenkins-ci.main:jenkins-core fixed: 2.541
<dependency>
    <groupId>org.jenkins-ci.main</groupId>
    <artifactId>jenkins-core</artifactId>
    <version>2.541</version>
</dependency>
org.jenkins-ci.main:cli fixed: 2.541
<dependency>
    <groupId>org.jenkins-ci.main</groupId>
    <artifactId>cli</artifactId>
    <version>2.541</version>
</dependency>
org.jenkins-ci.main:jenkins-core fixed: 2.528.3
<dependency>
    <groupId>org.jenkins-ci.main</groupId>
    <artifactId>jenkins-core</artifactId>
    <version>2.528.3</version>
</dependency>
org.jenkins-ci.main:cli fixed: 2.528.3
<dependency>
    <groupId>org.jenkins-ci.main</groupId>
    <artifactId>cli</artifactId>
    <version>2.528.3</version>
</dependency>
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release:

mvn dependency:tree -Dincludes=org.jenkins-ci.main

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2025-67635, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.jenkins-ci.main

Analyze the terminal output to locate any version of Jenkins core in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.541), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.jenkins-ci.main 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-404: Improper Resource Shutdown or Release, where the product does not release or incorrectly releases a resource before it is made available for re-use. In Jenkins core, 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

Jenkins 2.540 and earlier, LTS 2.528.2 and earlier does not properly close HTTP-based CLI connections when the connection stream becomes corrupted, allowing unauthenticated attackers to cause a denial of service.

CVE-2025-67635 Affected Jenkins core Versions

4 component(s)
Fixed Versions:
2.5412.528.3
Product / Package Ecosystem Affected Versions Fixed Version
org.jenkins-ci.main:jenkins-core
Maven
≥ 2.529
< 2.541
2.541
org.jenkins-ci.main:cli
Maven
≥ 2.529
< 2.541
2.541
org.jenkins-ci.main:jenkins-core
Maven
< 2.528.3
2.528.3
org.jenkins-ci.main:cli
Maven
< 2.528.3
2.528.3

References

Frequently Asked Questions

What is CVE-2025-67635?
CVE-2025-67635 is a security vulnerability in Jenkins core involving Jenkins has a Denial of service vulnerability in HTTP-based CLI under CWE-404: Improper Resource Shutdown or Release.
Which Jenkins core versions are affected?
Affected versions include releases prior to 2.541, 2.528.3 across affected packages: org.jenkins-ci.main:jenkins-core, org.jenkins-ci.main:cli.
What version fixes CVE-2025-67635?
Upgrading to 2.541, 2.528.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is jenkins-core affected?
Yes, org.jenkins-ci.main:jenkins-core is affected in releases prior to 2.541, 2.528.3. Upgrade your dependency to 2.541, 2.528.3 or later.
Is cli affected?
Yes, org.jenkins-ci.main:cli is affected in releases prior to 2.541, 2.528.3. Upgrade your dependency to 2.541, 2.528.3 or later.
What is the CVSS score of CVE-2025-67635?
CVE-2025-67635 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2025-67635?
CVE-2025-67635 is classified under CWE-404: Improper Resource Shutdown or Release (The product does not release or incorrectly releases a resource before it is made available for re-use.).
How can I check Maven dependencies for CVE-2025-67635?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.jenkins-ci.main'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-9p56-p6mw-w8qc",
  "modified" : "2026-01-22T13:44:11Z",
  "published" : "2025-12-10T18:30:26Z",
  "aliases" : [ "CVE-2025-67635" ],
  "summary" : "Jenkins has a Denial of service vulnerability in HTTP-based CLI",
  "details" : "Jenkins 2.540 and earlier, LTS 2.528.2 and earlier does not properly close HTTP-based CLI connections when the connection stream becomes corrupted, allowing unauthenticated attackers to cause a denial of service.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.jenkins-ci.main:jenkins-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.529"
      }, {
        "fixed" : "2.541"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.jenkins-ci.main:cli"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.529"
      }, {
        "fixed" : "2.541"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.jenkins-ci.main:jenkins-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.528.3"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.jenkins-ci.main:cli"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.528.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-67635"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jenkinsci/jenkins/commit/efa1816322026f2b9235a27eee814bcc7ba0a764"
  }, {
    "type" : "WEB",
    "url" : "https://fluidattacks.com/blog/unauth-dos-in-jenkins-cli"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/jenkinsci/jenkins"
  }, {
    "type" : "WEB",
    "url" : "https://www.jenkins.io/security/advisory/2025-12-10/#SECURITY-3630"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-404" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-12-10T20:05:52Z",
    "nvd_published_at" : "2025-12-10T17:15:55Z"
  }
}