CVE-2026-84660 — MEDIUM (5.4)

Vulnerability 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 Score

5.4

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

LOW

Availability

LOW

Related Weaknesses (CWE)

CWE-862

References

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

FAQ

What is CVE-2026-84660?

CVE-2026-84660 is a vulnerability with a CVSS score of 5.4 (MEDIUM). 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 authentic...

How severe is CVE-2026-84660?

CVE-2026-84660 has been rated MEDIUM with a CVSS base score of 5.4/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-84660?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.