{"id":"CVE-2026-84652","title":"In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, Jenkins does not rotate the session when a user is authenticated via the \"remember me\" cookie, allowing attackers able to serve content on the same site as Jenkins to set a known ses…","summary":"In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, Jenkins does not rotate the session when a user is authenticated via the \"remember me\" cookie, allowing attackers able to serve content on the same site as Jenkins to set a known ses…","severity":"high","cvss":7.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N","cwe":["CWE-384","CWE-613"],"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":"2026-09-11T21:09:18.967","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-84652","references":[{"url":"https://www.jenkins.io/security/advisory/2026-09-02/#SECURITY-4016","label":"jenkinsci-cert@googlegroups.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-84652.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-84652"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2527618"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-84652"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-84652"}],"tags":["nvd","csaf","vex","red-hat"],"epss":0.00443,"epssPercentile":0.3832,"ingestedAt":"2026-09-12T00:03:49.032Z","scores":{"nvd":7.3,"vendor":7.5},"slug":"CVE-2026-84652","body":"## Overview\n\nIn Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, Jenkins does not rotate the session when a user is authenticated via the \"remember me\" cookie, allowing attackers able to serve content on the same site as Jenkins to set a known session cookie in the victim's browser, which after the victim authenticates via the \"remember me\" cookie, grants the attacker access to Jenkins as that user.\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-2026-84652.json)","depth":"twilight","depthScore":40,"depthScoreParts":{"impact":40.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}