Moderate severityNVD Advisory· Published Apr 7, 2021· Updated Aug 3, 2024
CVE-2021-21639
CVE-2021-21639
Description
Jenkins 2.286 and earlier, LTS 2.277.1 and earlier does not validate the type of object created after loading the data submitted to the config.xml REST API endpoint of a node, allowing attackers with Computer/Configure permission to replace a node with one of a different type.
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 | < 2.277.2 | 2.277.2 |
org.jenkins-ci.main:jenkins-coreMaven | >= 2.278, < 2.287 | 2.287 |
Affected products
3- osv-coords2 versions
< 2.286.1+ 1 more
- (no CPE)range: < 2.286.1
- (no CPE)range: < 2.277.2
- Range: unspecified
Patches
Vulnerability mechanics
Generated on May 9, 2026. Inputs: CWE entries + fix-commit diffs from this CVE's patches. Citations validated against bundle.
References
5- github.com/advisories/GHSA-pvwx-3jx5-24r2ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2021-21639ghsaADVISORY
- www.openwall.com/lists/oss-security/2021/04/07/2ghsamailing-listx_refsource_MLISTWEB
- github.com/jenkinsci/jenkins/commit/84210baed0c866bdee3e59271f98a767a14a5509ghsaWEB
- www.jenkins.io/security/advisory/2021-04-07/ghsax_refsource_CONFIRMWEB
News mentions
1- Jenkins Security Advisory 2021-04-07Jenkins Security Advisories · Apr 7, 2021