GHSA-r6qv-frpc-q66c

Jenkins has a link following vulnerability allows arbitrary file creation

Source: GitHub Advisory Database (reviewed) High CVE-2026-33001

Packages

Ecosystem	Package	Affected	Fixed in
Maven	org.jenkins-ci.main:jenkins-core	< 2.555	2.555

Details

As written in the advisory (Markdown source, shown as plain text).

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.

References

External links from the advisory. They lead to third-party sites.

https://nvd.nist.gov/vuln/detail/CVE-2026-33001 advisory
https://github.com/jenkinsci/jenkins/commit/6dc99937605d5bddfeaae43a4cd14c2571e23adc web
https://github.com/jenkinsci/jenkins package
https://github.com/jenkinsci/jenkins/releases/tag/jenkins-2.555 web
https://www.jenkins.io/security/advisory/2026-03-18/#SECURITY-3657 web