cvedb.io
CVE-2026-34041
CRITICAL · CVSS 9.8
EPSS exploitation probability: 0%
Published 2026-03-31T03:15:58.053 · Last modified 2026-06-17T10:38:28.493

Summary

act is a project which allows for local running of github actions. Prior to version 0.2.86, act unconditionally processes the deprecated ::set-env:: and ::add-path:: workflow commands, which was disabled due to environment injection risks. When a workflow step echoes untrusted data to stdout, an attacker can inject these commands to set arbitrary environment variables or modify the PATH for all subsequent steps in the job. This issue has been patched in version 0.2.86.

Affected products

nektos — act

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.