CVE-2026-84657

In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, the build CLI command does not check the Item/Cancel permission when using the -s flag to cancel a build triggered to wait for completion, allowing attackers with Item/Build permission to cancel builds started by other users.

Score

CVSS 3.1 4.2 Medium

Status

Analyzed - jenkinsci-cert@googlegroups.com

Published

2026-09-02

Last modified

2026-09-02

Weaknesses

CWE-862

Affected products

• Jenkins (Jenkins)
• Jenkins (Jenkins Project)

References

• https://www.jenkins.io/security/advisory/2026-09-02/#SECURITY-4015