{"cve":"CVE-2021-21621","nvd":{"published":"2021-02-24T16:15:15.133","modified":"2026-06-17T03:35:53.223","status":"Modified","description":"Jenkins Support Core Plugin 2.72 and earlier provides the serialized user authentication as part of the \"About user (basic authentication details only)\" information, which can include the session ID of the user creating the support bundle in some configurations.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","score":5.3},"cwes":["CWE-200"],"references":["https://www.jenkins.io/security/advisory/2021-02-24/#SECURITY-2150","https://www.jenkins.io/security/advisory/2021-02-24/#SECURITY-2150"],"products":["jenkins:support_core"],"source":"nvd","synced_at":"2026-10-19T21:15:50.279857260+00:00"},"epss":{"cve":"CVE-2021-21621","score":0.01206,"percentile":0.68333,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-92pg-8g57-hqpx","url":"https://osv.dev/vulnerability/GHSA-92pg-8g57-hqpx","summary":"Support bundles can include user session IDs in Jenkins Support Core Plugin","modified":"2024-02-16T08:21:56.290313Z","packages":[{"ecosystem":"Maven","name":"org.jenkins-ci.plugins:support-core","purl":"pkg:maven/org.jenkins-ci.plugins/support-core","ranges":["<2.72.1"],"fixed":["2.72.1"]}]}],"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."]}