{"cve":"CVE-2021-21640","nvd":{"published":"2021-04-07T14:15:17.017","modified":"2026-06-17T03:35:55.110","status":"Modified","description":"Jenkins 2.286 and earlier, LTS 2.277.1 and earlier does not properly check that a newly created view has an allowed name, allowing attackers with View/Create permission to create views with invalid or already-used names.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","score":4.3},"cwes":[],"references":["http://www.openwall.com/lists/oss-security/2021/04/07/2","https://www.jenkins.io/security/advisory/2021-04-07/#SECURITY-1871","http://www.openwall.com/lists/oss-security/2021/04/07/2","https://www.jenkins.io/security/advisory/2021-04-07/#SECURITY-1871"],"products":["jenkins:jenkins"],"source":"nvd","synced_at":"2026-10-19T21:17:01.373894544+00:00"},"epss":{"cve":"CVE-2021-21640","score":0.01905,"percentile":0.7972,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-w2hv-rcqr-2h7r","url":"https://osv.dev/vulnerability/GHSA-w2hv-rcqr-2h7r","summary":"View name validation bypass in Jenkins","modified":"2024-02-16T08:17:19.692473Z","packages":[{"ecosystem":"Maven","name":"org.jenkins-ci.main:jenkins-core","purl":"pkg:maven/org.jenkins-ci.main/jenkins-core","ranges":["<2.277.2"],"fixed":["2.277.2"]},{"ecosystem":"Maven","name":"org.jenkins-ci.main:jenkins-core","purl":"pkg:maven/org.jenkins-ci.main/jenkins-core","ranges":[">=2.278 <2.287"],"fixed":["2.287"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}