{"cve":"CVE-2021-21604","nvd":{"published":"2021-01-13T16:15:13.523","modified":"2026-06-17T03:35:51.567","status":"Modified","description":"Jenkins 2.274 and earlier, LTS 2.263.1 and earlier allows attackers with permission to create or configure various objects to inject crafted content into Old Data Monitor that results in the instantiation of potentially unsafe objects once discarded by an administrator.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","score":8.0},"cwes":["CWE-502"],"references":["https://www.jenkins.io/security/advisory/2021-01-13/#SECURITY-1923","https://www.jenkins.io/security/advisory/2021-01-13/#SECURITY-1923"],"products":["jenkins:jenkins"],"source":"nvd","synced_at":"2026-10-19T21:14:10.479542811+00:00"},"epss":{"cve":"CVE-2021-21604","score":0.01697,"percentile":0.77175,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-qv6f-rcv6-6q3x","url":"https://osv.dev/vulnerability/GHSA-qv6f-rcv6-6q3x","summary":"Improper handling of REST API XML deserialization errors in Jenkins","modified":"2024-02-16T08:24:03.080443Z","packages":[{"ecosystem":"Maven","name":"org.jenkins-ci.main:jenkins-core","purl":"pkg:maven/org.jenkins-ci.main/jenkins-core","ranges":["<2.263.2"],"fixed":["2.263.2"]},{"ecosystem":"Maven","name":"org.jenkins-ci.main:jenkins-core","purl":"pkg:maven/org.jenkins-ci.main/jenkins-core","ranges":[">=2.264 <2.275"],"fixed":["2.275"]}]}],"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."]}