CVE-2026-84667
Received Received - Intake

Jenkins ThinBackup Plugin Backup Configuration Overwrite Vulnerability

Publication date: 2026-09-02

Last updated on: 2026-09-02

Assigner: Jenkins Project

Description
Jenkins ThinBackup Plugin 2.1.4 and earlier allows overwriting the plugin's backup configuration through Stapler data binding, allowing attackers to redirect backup writes to an attacker-specified directory and to include arbitrary files from the Jenkins controller file system in backups.

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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-2026-84667
EUVD
EUVD-2026-70133

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
jenkinsci thinbackup_plugin to 2.1.5 (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 ThinBackup Plugin 2.1.4 and earlier has a vulnerability where attackers can manipulate the plugin's backup configuration through Stapler data binding. This allows them to change where backups are saved and include arbitrary files from the Jenkins controller's file system in those backups.

Impact Analysis

This vulnerability could allow attackers to overwrite critical backup configurations, leading to loss of backup integrity. It may also expose sensitive Jenkins controller files through backups, potentially leaking confidential data or system files.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, violating GDPR's data protection requirements and HIPAA's security rules. Compromised backups may contain protected health information or personal data, risking non-compliance with these regulations.

Mitigation Strategies

Update Jenkins ThinBackup Plugin to version 2.1.5 or later to address the Stapler data binding issue. Disable the plugin if not in use and review backup configurations for unauthorized changes.

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