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Supply Chain Attack Targets 61 Public GitHub Repositories

Supply Chain Attack Targets 61 Public GitHub Repositories

First seen 29 Oct 2026, 14:13 UTC • •

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ThreatCluster AI
ThreatCluster •October 29, 2026 at 15:14 UTC
  • •Attackers compromised 61 public GitHub repositories in under an hour.
  • •The PHP2Shell exploit bypassed existing protections against remote code execution.
  • •No emergency fixes have been released for the vulnerabilities exploited.

A supply chain attack has been executed against 61 public repositories on GitHub, exploiting vulnerabilities in automated workflows. Attackers leveraged GitHub issues to trigger these workflows, which, if vulnerable, resulted in successful exploitation. The attack was reported to occur in less than an hour, showcasing the speed and efficiency of the threat actors. The PHP2Shell exploit was highlighted as a significant concern, bypassing protections meant to prevent remote code execution. This incident raises alarms about the security of public repositories and the potential for widespread impact on software supply chains. The exact number of affected systems and the specific vulnerabilities exploited remain unclear. No emergency fixes have been issued for the vulnerabilities identified in PHP2Shell.

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Timeline

2026-10-29
Supply chain attack reported
Attackers exploited GitHub issues to compromise 61 public repositories, executing workflows that were vulnerable.
The Register

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Common questions

What specific vulnerabilities were exploited?
The articles did not specify the exact vulnerabilities, but they mentioned the PHP2Shell exploit bypassing protections.
How can I protect my repositories?
Review your workflows for vulnerabilities and ensure that all dependencies are secure and up to date.
Is there a patch available?
No emergency fixes have been released for the vulnerabilities associated with the PHP2Shell exploit.