Jenkins has a link following vulnerability allows arbitrary file creation
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 software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | org.jenkins-ci.main:jenkins-core | < 2.555 | 2.555 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-33001
- https://github.com/jenkinsci/jenkins/commit/6dc99937605d5bddfeaae43a4cd14c2571e23adc
- https://github.com/jenkinsci/jenkins
- https://github.com/jenkinsci/jenkins/releases/tag/jenkins-2.555
- https://www.jenkins.io/security/advisory/2026-03-18/#SECURITY-3657
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-59, CWE-61- Platform
- Java / Kotlin (Maven)
- Package
org.jenkins-ci.main:jenkins-core- Disclosed
- 18.03.2026
- Updated
- 11.10.2026 13:20
Sources and licenses
OSV / GitHub Advisory Database - GHSA-r6qv-frpc-q66c - CC BY 4.0
Vulnerability history: org.jenkins-ci.main:jenkins-core
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 259
- First → latest
- 01.2022 06.2026
- Without a fix
- 1
- Exploited in attacks
- 4
Severity breakdown
- Critical 19
- High 62
- Medium 158
- Low 20
Disclosures per year
- 2022: 213
- 2023: 14
- 2024: 6
- 2025: 14
- 2026: 12
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