CVE-2026-84656
Undergoing Analysis Undergoing Analysis - In Progress

Missing Permission Check in Jenkins Allows Build Parameter Disclosure

Publication date: 2026-09-02

Last updated on: 2026-09-02

Assigner: Jenkins Project

Description
A missing permission check in Jenkins 2.579 and earlier, LTS 2.568.2 and earlier allows attackers with Item/Read permission on at least one job to read build parameter names and values of jobs they have no access to.

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Meta Information

Published
2026-09-02
Last Modified
2026-09-02
Generated
2026-09-15
AI Q&A
2026-09-02
EPSS Evaluated
2026-09-14
NVD
CVE-2026-84656
EUVD
EUVD-2026-70122

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
jenkins jenkins to 2.580 (exc)
jenkins jenkins to 2.569 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-862 The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

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Executive Summary

This vulnerability is a missing permission check in Jenkins versions 2.579 and earlier, and LTS 2.568.2 and earlier. It allows attackers with Item/Read permission on at least one job to read build parameter names and values of jobs they have no access to.

Detection Guidance

This vulnerability involves unauthorized access to build parameters due to missing permission checks in Jenkins. To detect it, review Jenkins job configurations and access logs for users with Item/Read permission attempting to access restricted job parameters. Check for unusual parameter exposure in build logs or system logs.

Impact Analysis

An attacker could exploit this to access sensitive build parameters from restricted jobs, potentially exposing confidential data such as credentials, API keys, or other sensitive information used in job configurations.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, violating compliance requirements for data protection such as GDPR or HIPAA, which mandate strict access controls and protection of personal or health information.

Mitigation Strategies

Upgrade Jenkins to version 2.580 or later, or LTS 2.568.3 or later to address the missing permission check vulnerability.

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