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I. Basic Information for CVE-2026-34041
Vulnerability Information

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Vulnerability Title
act: Unrestricted set-env and add-path command processing enables environment injection
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
输出中的特殊元素转义处理不恰当(注入)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Act 注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Act是nektos开源的一个本地运行GitHub Actions的工具。 Act 0.2.86之前版本存在注入漏洞,该漏洞源于无条件处理已弃用的::set-env::和::add-path::工作流命令,可能导致设置任意环境变量或修改后续步骤的PATH。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
nektosact < 0.2.86 -
II. Public POCs for CVE-2026-34041
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III. Intelligence Information for CVE-2026-34041
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IV. Related Vulnerabilities
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