Authorization Bypass Through User-Controlled Key Affecting 9router package, versions <0.3.75
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published5 May 2026
- disclosed9 Apr 2026
- creditUnknown
Introduced: 9 Apr 2026
CVE-2026-5842 (opens in a new tab)How to fix?
Upgrade 9router to version 0.3.75 or higher.
Overview
9router is a 9Router CLI - Start and manage 9Router server
Affected versions of this package are vulnerable to Authorization Bypass Through User-Controlled Key via the /api/* endpoints of the Administrative API. An attacker can gain unauthorized access to administrative functions by sending crafted requests remotely.