---
id: "CVE-2026-76804"
kind: "vulnerability"
aliases: ["CVE-2026-76804", "GHSA-qgw5-7j4f-fg97", "GO-2026-6574"]
title: "Nuclei: Local File Read via Workflow File-Protocol Gate Bypass in github.com/projectdiscovery/nuclei"
severity: "medium"
cvss: 5.5
epss: 0.00166
exploited: false
status: "open"
category: "package"
products: [{"name": "github.com/projectdiscovery/nuclei", "fixed": [], "affected": "all versions", "ecosystem": "go"}, {"name": "github.com/projectdiscovery/nuclei/v2", "fixed": [], "affected": "all versions", "ecosystem": "go"}, {"name": "github.com/projectdiscovery/nuclei/v3", "fixed": ["3.10.0"], "affected": ">= 3.0.0, < 3.10.0", "ecosystem": "go"}]
ecosystems: ["go"]
tags: ["cli", "go", "nuclei", "package", "sdk-integrators"]
not_affected_if: ["default-config", "no-untrusted-workflows", "nuclei-below-3.0.0"]
published_at: "2026-09-22T17:17:24+00:00"
first_seen_at: "2026-10-23T19:13:08+00:00"
updated_at: "2026-10-23T21:48:52+00:00"
sources: [{"source": "govuln", "url": "https://pkg.go.dev/vuln/GO-2026-6574", "first_seen_at": "2026-10-23T19:13:08+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-76804", "first_seen_at": "2026-10-23T19:13:43+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-76804", "first_seen_at": "2026-10-23T19:35:23+00:00"}]
---

# Nuclei: Local File Read via Workflow File-Protocol Gate Bypass in github.com/projectdiscovery/nuclei

Nuclei versions 3.0.0 through 3.10.0 skip the -file capability check when a workflow loads file: protocol templates. An attacker who supplies an untrusted unsigned workflow can read local files from the machine running the scanner, even when file templates are disabled.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- go:github.com/projectdiscovery/nuclei affected all versions fixed ?
- go:github.com/projectdiscovery/nuclei/v2 affected all versions fixed ?
- go:github.com/projectdiscovery/nuclei/v3 affected >= 3.0.0, < 3.10.0 fixed 3.10.0

## How to check

go list -m github.com/projectdiscovery/nuclei/v3
If the version is >= 3.0.0 and < 3.10.0, the module is affected.
Check whether workflows from untrusted sources are run with -w or passed to an SDK integration.

## Fix

Upgrade github.com/projectdiscovery/nuclei/v3 to 3.10.0 or later.
Until then, do not run unsigned or untrusted workflows.

## Timeline

- 2026-10-23T19:13:08+00:00 govuln https://pkg.go.dev/vuln/GO-2026-6574
- 2026-10-23T19:13:43+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2026-76804
- 2026-10-23T19:35:23+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-76804

## From the sources

Nuclei is a vulnerability scanner built on a simple YAML-based DSL. From 3.0.0 until 3.10.0, the workflow template loading path does not enforce the -file capability gate when resolving file: protocol templates referenced by a workflow. An untrusted unsigned workflow can therefore load a file-protocol template and read local files from the scanner host even when the operator has not enabled file templates. The issue affects CLI users running workflows with -w and SDK integrations that accept end-user workflows while relying on the default file-access restriction. This issue is fixed in version 3.10.0.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_