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.
Affected products
jenkins: jenkins
References10
- www.jenkins.io/security/advisory/2026-03-18/#SECURITY-3657 Vendor Advisory
- access.redhat.com/errata/RHSA-2026:10199
- access.redhat.com/errata/RHSA-2026:10201
- access.redhat.com/errata/RHSA-2026:10204
- access.redhat.com/errata/RHSA-2026:10205
- access.redhat.com/errata/RHSA-2026:10206
- access.redhat.com/errata/RHSA-2026:10209
- access.redhat.com/errata/RHSA-2026:10211
- access.redhat.com/errata/RHSA-2026:10213
- access.redhat.com/errata/RHSA-2026:10214
Metrics
- CVSS 3.1
-
8.8
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 2% percentile: 82 · as of 12 November 2026
- CWE
- CWE-59CWE-22
Could this be exploited in your environment?
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