What is CVE-2026-57295?

CVE-2026-57295 is a medium-severity vulnerability in Jenkins Ec2_fleet, classified under Cross-Site Request Forgery (CSRF). CVSS score: 5.4/10. Published 2026-06-24.

How severe is CVE-2026-57295?

Medium severity. CVSS v3 base score is 5.4 out of 10.

CSRF in Jenkins Ec2_fleet

CVE-2026-57295

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 m…

Vulnerability class: CSRF (Cross-Site Request Forgery)

EPSS: 0.001 (2.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

Affected products

Jenkins Ec2_fleet
Jenkins Project Ec2 Fleet Plugin — versions 0

Weakness classification (CWE)

CWE-352 — Cross-Site Request Forgery (CSRF)

References

jenkinsci-cert@googlegroups.com (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2026-57295?: CVE-2026-57295 is a medium-severity vulnerability in Jenkins Ec2_fleet, classified under Cross-Site Request Forgery (CSRF). CVSS score: 5.4/10. Published 2026-06-24.
How severe is CVE-2026-57295?: Medium severity. CVSS v3 base score is 5.4 out of 10.