{"id":"CVE-2026-84651","title":"In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, the REST API and CLI endpoints for updating agent configuration do not prevent a submitted configuration from overwriting a different agent by specifying that agent's name in the sub…","summary":"In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, the REST API and CLI endpoints for updating agent configuration do not prevent a submitted configuration from overwriting a different agent by specifying that agent's name in the sub…","severity":"medium","cvss":6.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","cwe":["CWE-284","CWE-386"],"vendor":"jenkins","product":"jenkins","affected":["jenkins < 2.568.3","jenkins < 2.580"],"patched":["jenkins 2.580"],"published":"2026-09-02","updated":"2026-09-11","sourceUpdated":"2026-09-11T21:16:20.667","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-84651","references":[{"url":"https://www.jenkins.io/security/advisory/2026-09-02/#SECURITY-4025","label":"jenkinsci-cert@googlegroups.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-84651.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-84651"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2527582"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-84651"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-84651"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-02T17:23:44.231193Z"},"ingestedAt":"2026-09-14T04:28:14.931Z","epss":0.00308,"epssPercentile":0.23483,"scores":{"nvd":6.3,"vendor":8.1},"slug":"CVE-2026-84651","body":"## Overview\n\nIn Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, the REST API and CLI endpoints for updating agent configuration do not prevent a submitted configuration from overwriting a different agent by specifying that agent's name in the submitted XML document, allowing attackers with Agent/Configure permission on one agent to take over a different agent, gaining control of its configuration and obtaining access to its inbound agent secret and environment variables.\n\n## Affected\n\n- `jenkins < 2.568.3`\n- `jenkins < 2.580`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `jenkins 2.580`\n\n## Vendor advisories\n\n- **Red Hat VEX** · Important · affected: OpenShift Developer Tools and Services · no fix planned: OpenShift Developer Tools and Services · updated 2026-09-28 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-84651.json)","depth":"sunlit","depthScore":35,"depthScoreParts":{"impact":34.7,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}