CVE-2026-33001
High
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.
SeverityHigh
CVSS8.8
Exploit probability—
Product
Jenkins
PublishedMar 18, 2026
First seenMar 18, 2026
Weakness typeCWE-59Improper link resolutionCWE-22Path traversal
How to fix
Update
- jenkins jenkins2.541.3, 2.555 or later
- org.jenkins-ci.main:jenkins-core2.555 or later
Vendor advisories
- jenkins.io/security/advisory/2026-03-18/#SECURITY-3657
- access.redhat.com/errata/RHSA-2026:10209
- access.redhat.com/errata/RHSA-2026:10201
- access.redhat.com/errata/RHSA-2026:10211
- access.redhat.com/errata/RHSA-2026:10204
- access.redhat.com/errata/RHSA-2026:10214
- access.redhat.com/errata/RHSA-2026:10213
- access.redhat.com/errata/RHSA-2026:10215
- access.redhat.com/errata/RHSA-2026:10206
- access.redhat.com/errata/RHSA-2026:10205
- access.redhat.com/errata/RHSA-2026:10199
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| jenkins jenkins | v < 2.541.3, v < 2.555 | 2.541.3, 2.555 |
| org.jenkins-ci.main:jenkins-coreMaven | v < 2.555 | 2.555 |
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