{"id":"CVE-2026-27099","aliases":["BIT-jenkins-2026-27099","GHSA-85h6-5m3v-gx37"],"url":"https://o3.security/vulnerability/CVE-2026-27099","summary":"Jenkins has a stored XSS vulnerability in node offline cause description","details":"Jenkins 2.483 through 2.550 (both inclusive), LTS 2.492.1 through 2.541.1 (both inclusive) does not escape the user-provided description of the \"Mark temporarily offline\" offline cause, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Agent/Configure or Agent/Disconnect permission.","published":"2026-02-18T15:18:43.857Z","modified":"2026-07-15T06:01:14.240476Z","cvss":{"score":8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.jenkins-ci.main:jenkins-core","fixedVersion":"2.551"},{"ecosystem":"Maven","name":"org.jenkins-ci.main:jenkins-core","fixedVersion":"2.541.2"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://www.jenkins.io/security/advisory/2026-02-18/#SECURITY-3669"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-15T06:01:14.240476Z"}}