Critical severity9.1NVD Advisory· Published Nov 4, 2021· Updated Jun 17, 2026
CVE-2021-21687
CVE-2021-21687
Description
Jenkins 2.318 and earlier, LTS 2.303.2 and earlier does not check agent-to-controller access to create symbolic links when unarchiving a symbolic link in FilePath#untar.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
org.jenkins-ci.main:jenkins-coreMaven | < 2.303.3 | 2.303.3 |
org.jenkins-ci.main:jenkins-coreMaven | >= 2.304, < 2.319 | 2.319 |
Affected products
5cpe:2.3:a:jenkins:jenkins:*:*:*:*:-:*:*:*+ 2 more
- cpe:2.3:a:jenkins:jenkins:*:*:*:*:-:*:*:*range: <2.319
- cpe:2.3:a:jenkins:jenkins:*:*:*:*:lts:*:*:*range: <2.303.3
- (no CPE)range: unspecified
- osv-coords2 versions
< 2.319.0+ 1 more
- (no CPE)range: < 2.319.0
- (no CPE)range: < 2.303.3
Patches
Vulnerability mechanics
References
3- github.com/advisories/GHSA-3q84-vrvx-rfvfghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2021-21687ghsaADVISORY
- www.jenkins.io/security/advisory/2021-11-04/nvdVendor AdvisoryWEB
News mentions
1- Jenkins Security Advisory 2021-11-04Jenkins Security Advisories · Nov 4, 2021