GHSA-9v77-j4xv-34gqMediumCVSS 5.4

Jenkins EC2 Fleet Plugin has a missing permission check

Published
June 24, 2026
Last Modified
September 25, 2026

🔗 CVE IDs covered (1)

CVE-2026-57294 →

📋 Description

Jenkins EC2 Fleet Plugin 4.2.3.539.v8fedff2a_81c3 and earlier does not perform permission checks in several HTTP endpoints used to validate cloud configurations.

This 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.

Additionally, these HTTP endpoints do not require POST requests, resulting in a cross-site request forgery (CSRF) vulnerability.

EC2 Fleet Plugin 4.2.3.540.va_6eedb_7b_c112 requires Overall/Administer permission and POST requests to perform these form validation actions.

🎯 Affected products1

  • maven/com.amazon.jenkins.fleet:ec2-fleet:< 4.2.3.540.va

🔗 References (6)