medium5.4
CVE-2026-57294
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 atta…
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| maven | com.amazon.jenkins.fleet:ec2-fleet | < 4.2.3.540.va | 4.2.3.540.va |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Jenkins | Ec2 Fleet | through 4.2.3.539.v8fedff2a_81c3 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-9v77-j4xv-34gq
- https://nvd.nist.gov/vuln/detail/CVE-2026-57294
- https://www.jenkins.io/security/advisory/2026-06-24/#SECURITY-3774
- https://github.com/jenkinsci/ec2-fleet-plugin/pull/531
- https://github.com/jenkinsci/ec2-fleet-plugin/commit/a6eedb7bc112de92bbba179c03840d845b845c82
- https://github.com/jenkinsci/ec2-fleet-plugin/releases/tag/4.2.3.540.va_6eedb_7b_c112