Jenkins Ec2 Fleet Plugin CVEs and Security Vulnerabilities

CVE-2026-57294

Missing Permission Check Allows Credential Theft in Jenkins EC2 Fleet Plugin

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.

CVSS 3.1 · 5.4 Medium EPSS < 1% KEV · Not listed

Vendors

Jenkins Jenkins Project

Products

Ec2 Fleet Jenkins Ec2 Fleet Plugin

CVE-2026-57295

Cross‑Site Request Forgery Allows Retrieval of Stored AWS Credentials in Jenkins EC2 Fleet Plugin

A cross-site request forgery (CSRF) vulnerability in Jenkins EC2 Fleet Plugin 4.2.3.539.v8fedff2a_81c3 and earlier allows attackers to connect to an attacker-specified URL using attacker-specified credentials IDs obtained through another method, capturing AWS credentials stored in Jenkins.