CVE-2026-34041 | BDVDB-2026-323924 Detail

Description#

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.

Impact#

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Exploit#

History#

1. Version 12026-03-31Record published in the CVE List.
2. Version 22026-04-02Most recent update recorded in the CVE List.