Controller file inclusion via configuration data binding
Published Sep 2, 2026 · Updated Sep 2, 2026
Improper access control in Jenkins ThinBackup Plugin 2.1.4 and earlier allows attackers to redirect backup writes and include controller files. Stapler invokes the global configuration constructor because it carries DataBoundConstructor, then binds submitted values through backup-setting DataBoundSetter methods. Attackers must be able to submit the affected forms; exploitation can relocate backup output and copy arbitrary controller files into a backup.
Summary
What happened
Improper access control in Jenkins ThinBackup Plugin 2.1.4 and earlier allows attackers to redirect backup writes and include controller files. Stapler invokes the global configuration constructor because it carries DataBoundConstructor, then binds submitted values through backup-setting DataBoundSetter methods. Attackers must be able to submit the affected forms; exploitation can relocate backup output and copy arbitrary controller files into a backup.
The record
- CVE
- CVE-2026-84667
- Published
- Sep 2, 2026
- Updated
- Sep 2, 2026
- Vendor
- Jenkins Project
- Product
- ThinBackup
- Classifications
- T1005
- Attack vector
- network
- Privileges
- Unavailable
Timeline
How it unfolded
- Sep 2, 2026CVE publishedPublication date reported by the CVE source.
- Sep 2, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=0 <=2.1.4
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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