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CVE-2026-76802— Nuclei: Arbitrary Command Execution via DAST Code Signature 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 is a vulnerability scanner built on a simple YAML-based DSL. From 3.0.0 until 3.10.0, the DAST template loading branch does not apply the unsigned code-template signature check before accepting a template that contains both a fuzzing: block and an unsig

CVSS 4.7 · Medium
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I. Basic Information for CVE-2026-76802

Vulnerability Information

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Vulnerability Title
Nuclei: Arbitrary Command Execution via DAST Code Signature Bypass
Source: CVE Program / CVE List V5
Vulnerability Description
Nuclei is a vulnerability scanner built on a simple YAML-based DSL. From 3.0.0 until 3.10.0, the DAST template loading branch does not apply the unsigned code-template signature check before accepting a template that contains both a fuzzing: block and an unsigned code: block. When an operator enables -dast, an untrusted multiprotocol template can place an unsigned code request into the execution queue and run arbitrary shell commands even without -code or a valid cryptographic signature. The issue affects CLI DAST scans and SDK integrations that enable DAST while accepting attacker-supplied templates. This issue is fixed in version 3.10.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
projectdiscovery nuclei >= 3.0.0, < 3.10.0 -

II. Public POCs for CVE-2026-76802

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III. Intelligence Information for CVE-2026-76802

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Patches & Fixes for CVE-2026-76802 (2)

Proof of Concept for CVE-2026-76802 (2)

Same Patch Batch · projectdiscovery · 2026-09-22 · 4 CVEs total

CVE-2026-76804 5.5 MEDIUM Nuclei: Local File Read via Workflow File-Protocol Gate Bypass
CVE-2026-76805 5.3 MEDIUM Nuclei: Environment Variable Disclosure via Response-Derived Data in DAST/Fuzz Mode
CVE-2026-76803 5.3 MEDIUM Nuclei: Local File Read via MySQL Client Sandbox Bypass

IV. Related Vulnerabilities

Same product: nuclei
Same vendor: projectdiscovery
Same weakness: CWE-78

V. Comments for CVE-2026-76802

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