What’s Vulnerable › Vulnerabilities

CVE-2026-84661

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-02 · updated 2026-09-03
• Weakness: CWE-862

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

• Jenkins Project Jenkins Pipeline: Build Step Plugin: through 599.v4b_67ea_11b_152

References

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

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