CVE-2026-57294 json
Jenkins EC2 Fleet Plugin has a missing permission check
published 2026-06-24 4 mo ago modified 2026-10-25 14 d ago also GHSA-9v77-j4xv-34gq , EUVD-2026-38775
- cvss
- 5.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 17%
- public exploits
- 0
- none known
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.
Patch / fix
- maven com.amazon.jenkins.fleet:ec2-fleet 4.2.3.540.va
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 4 mo ago
Exploit prediction
0.25% chance of exploitation in the next 30 days, higher than 17% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N |
| CNA | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N |
| GitHub | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N |
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
- Jenkins Project Jenkins EC2 Fleet Plugin
Classification
- Weakness
-
- CWE-862 Missing Authorization
References
-
github.com
/jenkinsci/ec2-fleet-plugin/pull/531
web
-
github.com
/jenkinsci/ec2-fleet-plugin/commit/a6eedb7bc112de92bbba179c03840d845b845c82
web
-
jenkins.io
/security/advisory/2026-06-24/#SECURITY-3774
vendor-advisory, web
-
nvd.nist.gov
/vuln/detail/CVE-2026-57294
advisory
-
github.com
/jenkinsci/ec2-fleet-plugin
package
-
github.com
/jenkinsci/ec2-fleet-plugin/releases/tag/4.2.3.540.va_6eedb_7b_c112
web
Sources
- CVE List CVE-2026-57294
- GitHub Advisory GHSA-9v77-j4xv-34gq
- NVD CVE-2026-57294
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