CVE-2026-26988: critical vulnerability in librenms
LibreNMS: SQL Injection in ajax_table.php spreads through a covert data stream
Published
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No sign of exploitation. No public exploitation artifact known so far.
LibreNMS has a SQL Injection flaw in its search feature that lets attackers insert malicious SQL commands through IPv6 address input, potentially stealing or modifying database contents. This happens because user input isn't properly checked before being used in database queries.
SQL Injection vulnerability in ajax_table.php endpoint where the IPv6 prefix parameter is concatenated directly into SQL queries without parameterization or sanitization. Unauthenticated or low-privileged attackers can inject arbitrary SQL to exfiltrate sensitive data or modify database records by crafting malicious IPv6 addresses in search requests. Fixed in version 26.2.0.
In the same product, most dangerous first.