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GHSA-9v77-j4xv-34gq

MediumCVSS 5.4 / 10
Published Jun 24, 2026·Last modified Sep 25, 2026
Affected Components(83)
Maven logocom.amazon.jenkins.fleet/ec2-fleet
1.0
Maven logocom.amazon.jenkins.fleet/ec2-fleet
1.16.1
Maven logocom.amazon.jenkins.fleet/ec2-fleet
1.8.0
1 / 28
Description

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.

This 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.

Additionally, these HTTP endpoints do not require POST requests, resulting in a cross-site request forgery (CSRF) vulnerability.

EC2 Fleet Plugin 4.2.3.540.va_6eedb_7b_c112 requires Overall/Administer permission and POST requests to perform these form validation actions.

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Risk Scores
Base Score
5.4

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a low impact on the confidentiality of the information. There is a low impact on the integrity of the data.

Threat Intelligence
5.0

Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.

EPSS
N/A

Probability that this vulnerability will be exploited in the wild within the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

Related Vulnerabilities
  • EUVD-2026-38775
    Alias
  • CVE-2026-57294
    Alias

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Medium severity
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