Missing perm check in Jenkins EC2 Fleet Plugin 4.2.3.539 Credential Leak
CVE-2026-57294 Published on June 24, 2026
A missing permission check in Jenkins EC2 Fleet Plugin 4.2.3.539.v8fedff2a_81c3 and earlier allows attackers with Overall/Read permission to connect to an attacker-specified URL using attacker-specified credentials IDs obtained through another method, capturing AWS credentials stored in Jenkins.
Vulnerability Analysis
CVE-2026-57294 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 and integrity, and no impact on 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-2026-57294 has been classified to as an AuthZ vulnerability or weakness.
Products Associated with CVE-2026-57294
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Affected Versions
Jenkins Project Jenkins EC2 Fleet Plugin:- Before and including 4.2.3.539.v8fedff2a_81c3 is affected.