CVE-2018-1000864: A denial of service vulnerability exists in Jenkins 2.153 and earlier, LTS 2.138.3 and earlier in CronTab.j...

Security readout for executives and security teams

Older Jenkins servers can be made to tie up a request handling thread in an endless loop. The attacker needs Overall/Read permission, so this is not described as unauthenticated. The likely business impact is degraded Jenkins availability, which can interrupt CI/CD operations. Exposure is most likely in Jenkins instances running the affected core versions and granting Overall/Read to broad user groups. Internet-facing Jenkins portals increase operational risk, but the source bundle does not state unauthenticated exploitation. Prioritize remediation for Jenkins systems supporting production delivery, especially externally reachable or broadly accessible instances. The issue can disrupt build and deployment pipelines, but available sources do not support emergency treatment as active exploitation. Mitigation focus: Upgrade Jenkins beyond the affected versions using Jenkins vendor guidance.; Apply relevant downstream vendor updates, including Red Hat packages where applicable.; Restrict Overall/Read permission to trusted users and groups..

Prepared

Jun 6, 2026, 22:09 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.