CVE-2026-26988
CRITICAL
GHSA-h3rv-q4rq-pqcv
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Lifecycle Timeline
4Description
LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. Versions 25.12.0 and below contain an SQL Injection vulnerability in the ajax_table.php endpoint. The application fails to properly sanitize or parameterize user input when processing IPv6 address searches. Specifically, the address parameter is split into an address and a prefix, and the prefix portion is directly concatenated into the SQL query string without validation. This allows an attacker to inject arbitrary SQL commands, potentially leading to unauthorized data access or database manipulation. This issue has been fixed in version 26.2.0.
Analysis
SQL injection in LibreNMS 25.12.0 and below. PoC and patch available.
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Remediation
Within 24 hours: Identify and inventory all LibreNMS instances and their versions; isolate or restrict network access to affected instances if patching cannot be completed immediately. Within 7 days: Apply vendor patches to upgrade all LibreNMS deployments to version 25.12.1 or later; validate patches in test environment first. …
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External POC / Exploit Code
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