{"cve":"CVE-2020-2099","nvd":{"published":"2020-01-29T16:15:12.037","modified":"2026-06-17T03:11:45.247","status":"Modified","description":"Jenkins 2.213 and earlier, LTS 2.204.1 and earlier improperly reuses encryption key parameters in the Inbound TCP Agent Protocol/3, allowing unauthorized attackers with knowledge of agent names to obtain the connection secrets for those agents, which can be used to connect to Jenkins, impersonating those agents.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L","score":8.6},"cwes":["CWE-330"],"references":["http://www.openwall.com/lists/oss-security/2020/01/29/1","https://access.redhat.com/errata/RHBA-2020:0402","https://access.redhat.com/errata/RHBA-2020:0675","https://access.redhat.com/errata/RHSA-2020:0681","https://access.redhat.com/errata/RHSA-2020:0683"],"products":["jenkins:jenkins"],"source":"nvd","synced_at":"2026-10-19T21:01:01.339895972+00:00"},"epss":{"cve":"CVE-2020-2099","score":0.01012,"percentile":0.63215,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-qp4f-2w67-c8hw","url":"https://osv.dev/vulnerability/GHSA-qp4f-2w67-c8hw","summary":"Inbound TCP Agent Protocol/3 authentication bypass in Jenkins","modified":"2024-02-16T08:13:01.115964Z","packages":[{"ecosystem":"Maven","name":"org.jenkins-ci.main:jenkins-core","purl":"pkg:maven/org.jenkins-ci.main/jenkins-core","ranges":["<2.204.2"],"fixed":["2.204.2"]},{"ecosystem":"Maven","name":"org.jenkins-ci.main:jenkins-core","purl":"pkg:maven/org.jenkins-ci.main/jenkins-core","ranges":[">=2.205 <2.214"],"fixed":["2.214"]}]}],"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."]}