CVE-2026-117624

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{"bugzilla": {"description": "jenkins: Jenkins: Root element check bypass via nested object deserialization", "id": "2563019", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2563019"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N", "status": "draft"}, "cwe": "CWE-502", "details": ["Jenkins 2.587 and earlier, LTS 2.580.1 and earlier does not consistently enforce the restriction on deserializing objects of types marked as storing their configuration in independent top-level configuration files as nested values, allowing attackers to bypass the root element check and potentially inject nested objects.", "A flaw was found in Jenkins. The application fails to consistently enforce restrictions against deserializing certain object types as nested values when those types are designated only for top-level configuration files. An attacker can exploit this flaw by submitting crafted configuration data to bypass root element validation checks and potentially inject unauthorized nested objects into the system."], "name": "CVE-2026-117624", "public_date": "2026-10-28T16:48:36Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-117624\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-117624\nhttps://www.jenkins.io/security/advisory/2026-10-28/#SECURITY-4243"], "statement": "Red Hat Product Security rates this vulnerability as Moderate severity because an attacker must already possess valid authentication and specific configuration rights, restricting the blast radius to unauthorized nested settings modification rather than complete system takeover. In Red Hat OpenShift and enterprise environments utilizing Jenkins, standard deployments enforce role-based access controls that restrict configuration capabilities to trusted team members. Consequently, unprivileged or unauthenticated users cannot trigger this deserialization flaw under typical operational settings.", "threat_severity": "Moderate"}

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