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Vulnerability record · CVE-2026-33001 · published 18 March 2026

CVE-2026-33001: Jenkins link following vulnerability

Jenkins · Jenkins

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.

8.8 CVSS 3.1 High EPSS 1.2% · top 33.6% CWE-59 · Link followingCWE-22 · Path traversal
8.8CVSS 3.1 base score
1.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
14References
9 Sep 2026Last modified by NVD

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/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.jenkins.io/security/advisory/2026-03-18/#SECURITY-3657 Vendor 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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-33001), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.