SB2026090456 - Multiple vulnerabilities in Jenkins Pipeline: Build Step plugin

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Main Vulnerability Database SB2026090456

SB2026090456 - Multiple vulnerabilities in Jenkins Pipeline: Build Step plugin

Published: September 4, 2026

Security Bulletin ID SB2026090456
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Missing Authorization (CVE-ID: CVE-2026-84660)

CWE-ID: CWE-862 - Missing Authorization

CVSSv4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to missing authorization check. A remote user can cause downstream builds triggered by the "build" step to be canceled.


2) Missing Authorization (CVE-ID: CVE-2026-84661)

CWE-ID: CWE-862 - Missing Authorization

CVSSv4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to missing authorization check. A remote user can cause downstream builds awaited by the "waitForBuild" step when the "propagateAbort" parameter is used to be canceled.


Remediation

Install update from vendor's website.

References