CVE-2026-25598
Medium
Description
Harden-Runner is a CI/CD security agent that works like an EDR for GitHub Actions runners. Prior to 2.14.2, a security vulnerability has been identified in the Harden-Runner GitHub Action (Community Tier) that allows outbound network connections to evade audit logging. Specifically, outbound traffic using the sendto, sendmsg, and sendmmsg socket system calls can bypass detection and logging when using egress-policy: audit. This vulnerability is fixed in 2.14.2.
SeverityMedium
CVSS5.3
Exploit probability—
ProductStepsecurity Harden-runner
PublishedFeb 9, 2026
First seenFeb 9, 2026
Weakness typeCWE-778CWE-778
How to fix
Update
- stepsecurity harden-runner2.14.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| stepsecurity harden-runner | v < 2.14.2 | 2.14.2 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.