AWS Credential Exposure via EC2 Fleet Plugin Misconfiguration

Publication date: 2026-06-24

Last updated on: 2026-06-26

Assigner: Jenkins Project

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 Scores

EPSS Scores

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Meta Information

Published

2026-06-24

Last Modified

2026-06-26

Generated

2026-07-14

AI Q&A

2026-06-24

EPSS Evaluated

2026-07-13

NVD

CVE-2026-57294

EUVD

EUVD-2026-38775

Affected Vendors & Products

Vendor	Product	Version / Range
jenkins	ec2_fleet	to 4.2.3.539.v8fedff2a_81c3 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-862	The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

Attack-Flow Graph

Executive Summary

This vulnerability is a missing permission check in the Jenkins EC2 Fleet Plugin version 4.2.3.539.v8fedff2a_81c3 and earlier. It allows attackers who have Overall/Read permission to connect to a URL specified by the attacker using credentials IDs that the attacker has obtained through other means. This enables the attacker to capture AWS credentials stored in Jenkins.

Impact Analysis

The vulnerability can lead to unauthorized access to AWS credentials stored in Jenkins. Attackers with limited permissions can exploit this flaw to capture sensitive AWS credentials, potentially leading to unauthorized access to AWS resources, data breaches, and further compromise of cloud infrastructure.

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