Vulnerability · Published Sep 2, 2026 · Assigned by jenkins
CVE-2026-84661
Medium 5.4
In plain English
A medium-severity missing authorization in Jenkins Pipeline: Build Step Plugin from Jenkins Project. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities).
Severity (CVSS 3.1)5.4Medium
Exploit odds (30 days)0.4%top 70.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Jenkins Project | Jenkins Pipeline: Build Step Plugin | 0 – through 599.v4b_67ea_11b_152 |
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
References
- Jenkins Security Advisory 2026-09-02 vendor-advisory