Medium severity · published Jun 24, 2026
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 attacker-specified URL…
5.4
CVSS
0.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 17% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
JE
Jenkins EC2 Fleet Plugin · Jenkins Project
through 4.2.3.539.v8fedff2a_81c3 · source: vendor
EF
Ec2 Fleet · Jenkins
through 4.2.3.539.v8fedff2a_81c3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-57294
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-57294
Vendor Advisory
https://www.jenkins.io/security/advisory/2026-06-24/#SECURITY-3774
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