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CVE-2026-41646— Nuclei: Local File Read via require() Module Loader Bypass

Quick assessment

Affected
projectdiscovery nuclei
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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之前版本存在访问控制错误漏洞，该漏洞源于JavaScript协议运行时允许通过require()函数读取本地.js和.json文件，绕过默认本地文件访问限制。

CVSS 5.5 · Medium EPSS 0.16% · P4

Affected Version Matrix 1

VendorProduct Version RangeStatus
projectdiscovery nuclei >= 3.0.0, < 3.8.0 affected
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I. Basic Information for CVE-2026-41646

Vulnerability Information
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Vulnerability Title
Nuclei: Local File Read via require() Module Loader Bypass
Source: CVE Program / CVE List V5
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 JavaScript protocol runtime allows JavaScript templates to read local .js and .json files through the require() function, bypassing the default local file access restriction. This issue has been patched in version 3.8.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Nuclei 访问控制错误漏洞
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之前版本存在访问控制错误漏洞，该漏洞源于JavaScript协议运行时允许通过require()函数读取本地.js和.json文件，绕过默认本地文件访问限制。
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-2026-41646

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III. Intelligence Information for CVE-2026-41646

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Patches & Fixes for CVE-2026-41646 (2)

Vendor Advisories for CVE-2026-41646 (1)

IV. Related Vulnerabilities

Same product: nuclei
Same vendor: projectdiscovery
Same weakness: CWE-284

V. Comments for CVE-2026-41646

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