CVE-2026-33001
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.11%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.11% probability · 64th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-59, CWE-22
- Affected
- jenkins/jenkins
- Source
- jenkinsci-cert@googlegroups.com
References
- https://www.jenkins.io/security/advisory/2026-03-18/#SECURITY-3657Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:10199
- https://access.redhat.com/errata/RHSA-2026:10201
- https://access.redhat.com/errata/RHSA-2026:10204
- https://access.redhat.com/errata/RHSA-2026:10205
- https://access.redhat.com/errata/RHSA-2026:10206
- https://access.redhat.com/errata/RHSA-2026:10209
- https://access.redhat.com/errata/RHSA-2026:10211
- https://access.redhat.com/errata/RHSA-2026:10213
- https://access.redhat.com/errata/RHSA-2026:10214
- https://access.redhat.com/errata/RHSA-2026:10215
- https://access.redhat.com/security/cve/CVE-2026-33001
- https://bugzilla.redhat.com/show_bug.cgi?id=2448645
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33001.json
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.