{"id":"CVE-2020-2099","aliases":["BIT-jenkins-2020-2099","GHSA-qp4f-2w67-c8hw"],"url":"https://o3.security/vulnerability/CVE-2020-2099","summary":"Inbound TCP Agent Protocol/3 authentication bypass in Jenkins","details":"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.","published":"2020-01-29T16:15:12.037Z","modified":"2026-07-08T20:30:57.192710Z","cvss":{"score":8.6,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.jenkins-ci.main:jenkins-core","fixedVersion":"2.204.2"},{"ecosystem":"Maven","name":"org.jenkins-ci.main:jenkins-core","fixedVersion":"2.214"}],"fix":null,"references":[{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2020/01/29/1"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHBA-2020:0402"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHBA-2020:0675"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2020:0681"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2020:0683"},{"type":"ADVISORY","url":"https://jenkins.io/security/advisory/2020-01-29/#SECURITY-1682"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T20:30:57.192710Z"}}