CVE-2026-84660

Description

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

CVSS Vector

References

• https://www.jenkins.io/security/advisory/2026-09-02/#SECURITY-3870