CVE-2024-52587: Step-Security Harden-Runner

High severity, CVSS 8.8. EPSS: 2.8% chance of exploitation in the next 30 days.

StepSecurity's Harden-Runner provides network egress filtering and runtime security for GitHub-hosted and self-hosted runners. Versions of step-security/harden-runner prior to v2.10.2 contain multiple command injection weaknesses via environment variables that could potentially be exploited under specific conditions. However, due to the current execution order of pre-steps in GitHub Actions and the placement of harden-runner as the first step in a job, the likelihood of exploitation is low as the Harden-Runner action reads the environment variable during the pre-step stage. There are no known exploits at this time. Version 2.10.2 contains a patch.

Affected products

• Step-Security Harden-Runner: before 2.10.2 (fixed in 2.10.2)
• Step Security Harden Runner: before 2.10.2 (fixed in 2.10.2)

Published 2024-11-18. Last modified 2026-06-17.