CVE-2026-84664
Received Received - Intake

Jenkins GitLab Plugin GitLab Connection Configuration Overwrite

Publication date: 2026-09-02

Last updated on: 2026-09-02

Assigner: Jenkins Project

Description
Jenkins GitLab Plugin 1.9.16 and earlier allows overwriting the global GitLab connection configuration through Stapler data binding, allowing attackers to connect to an attacker-specified URL using GitLab API tokens already configured by administrators.

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Meta Information

Published
2026-09-02
Last Modified
2026-09-02
Generated
2026-09-02
AI Q&A
2026-09-02
EPSS Evaluated
N/A
NVD
CVE-2026-84664
EUVD
EUVD-2026-70130

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
jenkinsci gitlab_plugin to 1.9.17 (exc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

Jenkins GitLab Plugin versions 1.9.16 and earlier are vulnerable to improper input validation. Attackers can exploit Stapler data binding to overwrite the global GitLab connection configuration. This allows them to redirect GitLab API calls to a malicious URL while using legitimate API tokens already configured by administrators.

Impact Analysis

This vulnerability could allow attackers to exfiltrate data or perform unauthorized actions by intercepting GitLab API communications. Sensitive project data, credentials, or tokens may be exposed if the malicious URL captures or relays requests to the real GitLab server.

Compliance Impact

This vulnerability may lead to unauthorized access to personal or sensitive data, violating GDPR and HIPAA requirements for data protection and access controls. Organizations could face compliance violations if data breaches occur due to this misconfiguration.

Mitigation Strategies

Update Jenkins GitLab Plugin to version 1.9.17 or later to address the Stapler data binding issue. Review and audit GitLab connection configurations for unauthorized changes.

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