🛡️ CVE-2026-34041
🔴 CVSS 9.8 — Critical ⚠️ Exploit Public CWE-74 NVD
9.8
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity CRITICAL
CVSS Score 9.8
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE CWE-74
Public Exploit ⚠️ Yes
Source NVD
Published 2026-03-31
Updated 2026-06-15
Modified 2026-04-06

Affected Packages

Software From version Fixed in
act — 0.2.86
github.com/nektos/act — —

Similar Threats

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