LibreNMS - Authentication Bypass (CVE-2026-86426)
Description
LibreNMS before 26.8.0 contains an authentication bypass vulnerability in the REST API that allows unauthenticated attackers to access protected endpoints by sending numeric values instead of string tokens. Attackers can exploit MySQL type coercion by sending small integers like 0 through 9 to match token hashes, gaining access to API functionality including device credentials and administrative features that enable remote code execution through alert templates.
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Exploitation Timeline
Active Attackers
Unique IPs observed exploiting this CVE in the last 14 days.