Missing Permission Check in Jenkins 2.579/LTS 2.568.2: Unauthorized Job Parameter View
CVE-2026-84656 Published on September 2, 2026
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.
Vulnerability Analysis
CVE-2026-84656 is exploitable with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality, a small impact on integrity and availability.
Weakness Type
What is an AuthZ Vulnerability?
The software does not perform an authorization check when an actor attempts to access a resource or perform an action.
CVE-2026-84656 has been classified to as an AuthZ vulnerability or weakness.
Products Associated with CVE-2026-84656
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Affected Versions
Jenkins Project Jenkins:- Version 2.580 and below * is unaffected.
- Version 2.568.3 and below 2.568.* is unaffected.