CVE-2026-33001
Medium
Elevated severity or exploit probability.
CVSS base
8.8
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS — probability of exploitation (30 days)
0.7%
49.8th percentile
CISA KEV
Not listed
Weakness / dates
CWE-22
Published 2026-03-18 · modified 2026-09-09
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
References
- https://www.jenkins.io/security/advisory/2026-03-18/#SECURITY-3657
- 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