Link following in Jenkins and Jenkins LTS - CVE-2026-33001
Published: March 23, 2026
Vulnerability identifier: #VU124226
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-33001
CWE-ID: CWE-59
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Jenkins
Affected software:
Jenkins
Jenkins LTS
Jenkins
Jenkins LTS
Detailed vulnerability description
The vulnerability allows a remote attacker to escalate privileges on the system.
The vulnerability exists due to an insecure link following issue during the extraction of .tar and .tar.gz archives. A remote user can create a specially crafted symbolic link to a critical file on the system and overwrite it with privileges of the application.
How to mitigate CVE-2026-33001
Install updates from vendor's website.