{"cve":"CVE-2021-21615","nvd":{"published":"2021-01-26T18:16:18.693","modified":"2026-06-17T03:35:52.627","status":"Modified","description":"Jenkins 2.275 and LTS 2.263.2 allows reading arbitrary files using the file browser for workspaces and archived artifacts due to a time-of-check to time-of-use (TOCTOU) race condition.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","score":5.3},"cwes":["CWE-367"],"references":["http://www.openwall.com/lists/oss-security/2021/01/26/2","https://www.jenkins.io/security/advisory/2021-01-26/#SECURITY-2197","http://www.openwall.com/lists/oss-security/2021/01/26/2","https://www.jenkins.io/security/advisory/2021-01-26/#SECURITY-2197"],"products":["jenkins:jenkins"],"source":"nvd","synced_at":"2026-10-19T21:14:10.479542811+00:00"},"epss":{"cve":"CVE-2021-21615","score":0.0091,"percentile":0.59992,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-qxp6-27gw-99cj","url":"https://osv.dev/vulnerability/GHSA-qxp6-27gw-99cj","summary":"Time-of-check Time-of-use (TOCTOU) Race Condition in Jenkins","modified":"2023-12-06T01:00:47.624306Z","packages":[{"ecosystem":"Maven","name":"org.jenkins-ci.main:jenkins-core","purl":"pkg:maven/org.jenkins-ci.main/jenkins-core","ranges":["<2.263.3"],"fixed":["2.263.3"]},{"ecosystem":"Maven","name":"org.jenkins-ci.main:jenkins-core","purl":"pkg:maven/org.jenkins-ci.main/jenkins-core","ranges":[">=2.264 <2.276"],"fixed":["2.276"]}]}],"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."]}