Vulnerability GHSA-9v77-j4xv-34gq

Medium Risk
MEDIUM RISK
CVSS Score: 5.4
Score Range: 4.0–6.9
Medium severity vulnerabilities (CVSS 4.0–6.9). Important issues that meaningfully reduce security confidence.
3 months ago
June 24, 2026 at 03:31 PM UTC
Jenkins EC2 Fleet Plugin has a missing permission check
1.0.0 and 1.3.0 - 1.6.0 and 1.8.0 - 1.8.1 and 1.12.0 - 1.15.0 and 2.4.0 - 2.4.1 and 2.6.0 - 2.7.1 and 3.1.0 - 3.2.0
1.0.0 and 1.3.0 - 1.6.0 and 1.8.0 - 1.8.1 and 1.12.0 - 1.15.0 and 2.4.0 - 2.4.1 and 2.6.0 - 2.7.1 and 3.1.0 - 3.2.0

Summary

Jenkins EC2 Fleet Plugin has a missing permission check

Details

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.

Timeline

Published
3 months ago
June 24, 2026 at 03:31 PM UTC
Last Modified
2 days ago
September 25, 2026 at 07:15 PM UTC