Vulnerabilities in pkg:maven/com.amazon.jenkins.fleet/ec2-fleet
PACKAGECVE-2026-57294 is a MODERATE (CVSS 5.4) jenkins ec2 fleet plugin has vulnerability (CWE-862: Missing Authorization) affecting Ec2 fleet libraries in the Maven ecosystem. The issue involves jenkins ec2 fleet plugin has a missing permission check. Remediation is available by upgrading affected packages to version 4.2.3.540.va.
pkg:maven/com.amazon.jenkins.fleet/ec2-fleet
Vulnerability advisories affecting package pkg:maven/com.amazon.jenkins.fleet/ec2-fleet. Select an advisory below to view technical details or fixes.
| Advisory ID | CVE / NVD | Severity | Summary |
|---|---|---|---|
| GHSA-9v77-j4xv-34gq | CVE-2026-57294 | MODERATE | Jenkins EC2 Fleet Plugin has a missing permission check |
| GHSA-2x9c-vp3g-hvv2 | CVE-2026-57295 | MODERATE | Jenkins EC2 Fleet Plugin has a cross-site request forgery (CSRF) vulnerability |
CVE-2026-57294 at a Glance
Security Impact
CVSS: 5.4
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N).
How to Fix CVE-2026-57294
To remediate this vulnerability, upgrade all affected Ec2 fleet dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
<dependency>
<groupId>com.amazon.jenkins.fleet</groupId>
<artifactId>ec2-fleet</artifactId>
<version>4.2.3.540.va</version>
</dependency>Run the following command in your project directory to verify that all resolved dependencies use the patched release:
mvn dependency:tree -Dincludes=com.amazon.jenkins.fleetHow to Check if You Are Affected
To determine whether your Java application is affected by CVE-2026-57294, inspect your build dependencies using the Maven Dependency Plugin:
mvn dependency:tree -Dincludes=com.amazon.jenkins.fleetAnalyze the terminal output to locate any version of Ec2 fleet in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.2.3.540.va), your application is affected.
Note: The mvn dependency:tree -Dincludes=com.amazon.jenkins.fleet command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-862: Missing Authorization, where the product does not perform an authorization check when an actor attempts to access a resource or perform an action. In Ec2 fleet, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2026-57294 Affected Ec2 fleet Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
com.amazon.jenkins.fleet:ec2-fleet
|
Maven |
< 4.2.3.540.va
|
4.2.3.540.va
|
References
Frequently Asked Questions
What is CVE-2026-57294?
Which Ec2 fleet versions are affected?
What version fixes CVE-2026-57294?
Is ec2-fleet affected?
What is the CVSS score of CVE-2026-57294?
What CWE is associated with CVE-2026-57294?
How can I check Maven dependencies for CVE-2026-57294?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-9v77-j4xv-34gq",
"modified" : "2026-09-25T19:03:01Z",
"published" : "2026-06-24T15:31:47Z",
"aliases" : [ "CVE-2026-57294" ],
"summary" : "Jenkins EC2 Fleet Plugin has a missing permission check",
"details" : "Jenkins EC2 Fleet Plugin 4.2.3.539.v8fedff2a_81c3 and earlier does not perform permission checks in several HTTP endpoints used to validate cloud configurations.\n\nThis 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.\n\nAdditionally, these HTTP endpoints do not require POST requests, resulting in a cross-site request forgery (CSRF) vulnerability.\n\nEC2 Fleet Plugin 4.2.3.540.va_6eedb_7b_c112 requires Overall/Administer permission and POST requests to perform these form validation actions.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Maven",
"name" : "com.amazon.jenkins.fleet:ec2-fleet"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "4.2.3.540.va"
} ]
} ]
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-57294"
}, {
"type" : "WEB",
"url" : "https://github.com/jenkinsci/ec2-fleet-plugin/pull/531"
}, {
"type" : "WEB",
"url" : "https://github.com/jenkinsci/ec2-fleet-plugin/commit/a6eedb7bc112de92bbba179c03840d845b845c82"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/jenkinsci/ec2-fleet-plugin"
}, {
"type" : "WEB",
"url" : "https://github.com/jenkinsci/ec2-fleet-plugin/releases/tag/4.2.3.540.va_6eedb_7b_c112"
}, {
"type" : "WEB",
"url" : "https://www.jenkins.io/security/advisory/2026-06-24/#SECURITY-3774"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-862" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2026-09-25T19:03:01Z",
"nvd_published_at" : "2026-06-24T14:17:35Z"
}
}