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Supply Chain Security Incident Update: May 9

Checkmarx • May 10, 2026

We are aware that a modified version of the Checkmarx Jenkins AST plugin was published to the Jenkins Marketplace. We are in the process of publishing a new version of this plug-in.

If you are using Checkmarx Jenkins AST Plugin, you need to ensure that you are using the version 2.0.13-829.vc72453fa_1c16 that was published on Dec. 17, 2025. Customers should ensure they are using this version only.

We will continue to updates as we have them available.

The full story

This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Checkmarx Jenkins Plugin Compromised by TeamPCP Malware Attack Checkmarx reported a malicious version of its Jenkins AST plugin was uploaded to the Jenkins Marketplace on May 9, 2026. This backdoored plugin, which affects security scans in Jenkins CI pipelines, poses a significant risk as it can compromise multiple projects by exploiting trusted infrastructure. Users are advised to verify they are using the correct version (2.0.13-829.vc72453fa_1c16) released on December 17, 2025. The attack is attributed to TeamPCP, which has previously targeted Checkmarx's tools, including its GitHub Actions plugin and KICS static analysis tool. The malware, dubbed Shail-Hulud, has a CVSS score of 9.4, indicating a critical vulnerability. This incident marks the third compromise of Checkmarx's packages in recent months, raising concerns about the company's security practices. Checkmarx is actively working to remove the malicious plugin and has urged users to rotate their secrets immediately. 9 sources 73

Extracted Entities

Supply Chain Security Incident Update: May 9

The full story

Extracted Entities

Attack Types (1)

MITRE ATT&CK (1)

Platforms (1)