CVE-2026-59801 PoC — 9Router 0.4.41 - Unauthenticated API Exposure via /api/providers

Source

https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-59801.yaml

Associated Vulnerability

Title: 9Router 0.4.41 - Unauthenticated API Exposure via /api/providers (CVE-2026-59801)
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.

Description

9Router through version 0.4.41 contains an unauthenticated access vulnerability caused by missing authentication middleware in Next.js API routes under src/app/api/providers/*, letting remote attackers enumerate, create, modify, or delete provider connections, exploit requires no authentication.

File Snapshot

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