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Jenkins has a Denial of service vulnerability in HTTP-based CLI

High severity GitHub Reviewed Published Dec 10, 2025 to the GitHub Advisory Database • Updated Dec 10, 2025

Package

maven org.jenkins-ci.main:cli (Maven)

Affected versions

>= 2.529, < 2.541
< 2.528.3

Patched versions

2.541
2.528.3
maven org.jenkins-ci.main:jenkins-core (Maven)
>= 2.529, < 2.541
< 2.528.3
2.541
2.528.3

Description

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.

References

Published by the National Vulnerability Database Dec 10, 2025
Published to the GitHub Advisory Database Dec 10, 2025
Reviewed Dec 10, 2025
Last updated Dec 10, 2025

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS score

Weaknesses

Improper Resource Shutdown or Release

The product does not release or incorrectly releases a resource before it is made available for re-use. Learn more on MITRE.

CVE ID

CVE-2025-67635

GHSA ID

GHSA-9p56-p6mw-w8qc

Source code

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