CVE-2026-84661

A missing permission check in Jenkins Pipeline: Build Step Plugin 599.v4b_67ea_11b_152 and earlier causes downstream builds awaited by the `waitForBuild` step when the `propagateAbort` parameter is used to be canceled even when the build's authentication lacks Item/Cancel permission on the downstream job.

  • Published Sep 2, 2026
  • CVSS 5.4 medium
  • 0.4% chance of exploitation in the next 30 days (EPSS)

Affected software

CVE-2026-84661 at the National Vulnerability Database