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CVE-2026-33001

high CVSS 8.8 EPSS 1.2%

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.

Versions it affects

Software versions checked with the free lookup that CVE-2026-33001 applies to, and the release that fixes it where the sources name one.

Jenkins 1.509 fixed in 2.555

At a glance

Severity
High
CVSS base score
8.8 out of 10
Known exploited
Not in CISA's catalogue of exploited vulnerabilities
EPSS
1.2% probability of exploitation in the next 30 days, higher than 66% of scored vulnerabilities
Weakness
CWE-22
Published
2026-03-18
NVD CVE.org Advisory record

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