Medium severity5.3NVD Advisory· Published Jan 13, 2021· Updated Jun 17, 2026
CVE-2021-21609
CVE-2021-21609
Description
Jenkins 2.274 and earlier, LTS 2.263.1 and earlier does not correctly match requested URLs to the list of always accessible paths, allowing attackers without Overall/Read permission to access some URLs as if they did have Overall/Read permission.
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 | < 2.263.2 | 2.263.2 |
org.jenkins-ci.main:jenkins-coreMaven | >= 2.264, < 2.275 | 2.275 |
Affected products
5cpe:2.3:a:jenkins:jenkins:*:*:*:*:-:*:*:*+ 2 more
- cpe:2.3:a:jenkins:jenkins:*:*:*:*:-:*:*:*range: <=2.274
- cpe:2.3:a:jenkins:jenkins:*:*:*:*:lts:*:*:*range: <=2.263.1
- (no CPE)range: unspecified
- osv-coords2 versions
< 2.274.1+ 1 more
- (no CPE)range: < 2.274.1
- (no CPE)range: < 2.263.2
Patches
Vulnerability mechanics
References
4- github.com/advisories/GHSA-4625-q52w-39cxghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2021-21609ghsaADVISORY
- www.jenkins.io/security/advisory/2021-01-13/nvdVendor AdvisoryWEB
- github.com/jenkinsci/jenkins/commit/fe9091fc74d55a56fd36544f3038d47c8cb331a4ghsaWEB
News mentions
1- Jenkins Security Advisory 2021-01-13Jenkins Security Advisories · Jan 13, 2021