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TI-2026-41231 Aliases CVE-2026-57294GHSA-9v77-j4xv-34gq

Missing authorization in Jenkins EC2 Fleet Plugin

Priority LOW 24CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub. Impact type from CWE-862.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00254 17th percentileScored 2026-11-07
Fix Fixed com.amazon.jenkins.fleet:ec2-fleet (Maven): 4.2.3.540.va

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
JenkinsJenkins EC2 Fleet Pluginup to 4.2.3.539.v8fedff2a_81c3—No fix listedCNA
—com.amazon.jenkins.fleet:ec2-fleet (Maven)before 4.2.3.540.va4.2.3.540.vaPatch availableGHSA-9v77-j4xv-34gq
  • Jenkins EC2 Fleet Plugin VendorJenkins Affected up to 4.2.3.539.v8fedff2a_81c3 Fixed in — No fix listed CNA
  • com.amazon.jenkins.fleet:ec2-fleet (Maven) Vendor— Affected before 4.2.3.540.va Fixed in 4.2.3.540.va Patch available GHSA-9v77-j4xv-34gq

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:jenkins:ec2_fleet:*:*:*:*:*:jenkins:*:*up to 4.2.3.539.v8fedff2a_81c3VulnerableJenkins
  • cpe:2.3:a:jenkins:ec2_fleet:*:*:*:*:*:jenkins:*:* Versions up to 4.2.3.539.v8fedff2a_81c3 Vulnerable ·Jenkins

Remediation

  • Fix · GHSA-9v77-j4xv-34gq com.amazon.jenkins.fleet:ec2-fleet (Maven) Fixed in 4.2.3.540.va Advisory →

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Jenkins EC2 Fleet Plugin — Jenkins Security Advisory 2026-06-24

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2026-41232 Cross-site request forgery in Jenkins EC2 Fleet PluginPriority LOW 24
    Show all 2 records → Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-57294
  2. 2026-10-03 Alias added: GHSA-9v77-j4xv-34gq

References

Advisory 2

Other 4

  • TI-2026-41232 Cross-site request forgery in Jenkins EC2 Fleet Plugin CVSS 3.1MEDIUM 5.4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences