vulnerability
Jenkins Advisory 2026-03-18: CVE-2026-33001: Link following vulnerability allows arbitrary file creation
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 9 | (AV:N/AC:L/Au:S/C:C/I:C/A:C) | Mar 19, 2026 | Mar 19, 2026 | Mar 27, 2026 |
Severity
9
CVSS
(AV:N/AC:L/Au:S/C:C/I:C/A:C)
Published
Mar 19, 2026
Added
Mar 19, 2026
Modified
Mar 27, 2026
Description
Jenkins 2.554 and earlier, LTS 2.541.2 and earlier does not safely handle symbolic links during the extraction of .tar and .tar.gz archives, allowing crafted archives to write files to arbitrary locations on the filesystem, restricted only by file system access permissions of the user running Jenkins.
This can be exploited to deploy malicious scripts or plugins on the controller by attackers with Item/Configure permission, or able to control agent processes.
Solutions
jenkins-lts-upgrade-2_541_3jenkins-upgrade-2_555
Rapid7 Labs
2026 Global Threat Landscape Report
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