CVE-2026-41645— Nuclei: Environment variable disclosure via Response-Derived DSL Expressions
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I. Basic Information for CVE-2026-41645
Vulnerability Information
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Vulnerability Title
Nuclei: Environment variable disclosure via Response-Derived DSL Expressions
Source: NVD (National Vulnerability Database)
Vulnerability Description
Nuclei is a vulnerability scanner built on a simple YAML-based DSL. From version 3.0.0 to before version 3.8.0, a vulnerability in Nuclei's expression evaluation engine makes it possible for a malicious target server to inject and execute supported DSL expressions. This happens when HTTP response data containing helper/function syntax gets reused by multi-step templates. If the -env-vars / -ev option is explicitly enabled, this can expose host environment variables. That option is off by default, so standard configurations are not affected by the information disclosure risk. This issue has been patched in version 3.8.0.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Nuclei 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nuclei是ProjectDiscovery开源的一个基于简单 YAML 的 DSL 的快速可定制漏洞扫描器。 Nuclei 3.0.0版本至3.8.0之前版本存在代码注入漏洞，该漏洞源于表达式评估引擎可能被恶意目标服务器注入DSL表达式，当启用-env-vars选项时可能暴露环境变量。
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
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| projectdiscovery | nuclei | >= 3.0.0, < 3.8.0 | - |
II. Public POCs for CVE-2026-41645
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|---|
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- Release v3.8.0 · projectdiscovery/nuclei · GitHubx_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-41645
IV. Related Vulnerabilities
Same product: nuclei
- CVE-2026-41646
Nuclei: Local File Read via require() Module Loader Bypass - CVE-2026-41282
Nuclei 安全漏洞 - CVE-2024-43405
Nuclei Template Signature Verification Bypass - CVE-2024-40641
Unsigned code template execution through workflows in projec - CVE-2024-27920
Unsigned code template execution through workflows in projec
Same vendor: projectdiscovery
- CVE-2026-41646
Nuclei: Local File Read via require() Module Loader Bypass - CVE-2026-41282
Nuclei 安全漏洞 - CVE-2024-43405
Nuclei Template Signature Verification Bypass - CVE-2024-40641
Unsigned code template execution through workflows in projec - CVE-2024-5262
ProjectDiscovery Interactsh - Files or Directories Accessibl
Same weakness: CWE-94
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Sentry 8.2.0 Remote Code Execution via Pickle Deserializatio - CVE-2022-50944
Aero CMS 0.0.1 PHP Code Injection via posts.php
V. Comments for CVE-2026-41645
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