CVE-2026-84661

Medium

Description

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.

SeverityMedium

CVSS5.4

Exploit probability—

ProductJenkins Pipeline: Build Step Plugin

PublishedSep 2, 2026

First seenSep 2, 2026

Weakness typeCWE-862Missing authorization

How to fix

Vendor advisories

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

Affected products

Product	Affected versions	Fixed in
Jenkins Project Jenkins Pipeline: Build Step Plugin	v ≤ 599.v4b_67ea_11b_152	—

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