CVE-2026-26988CWE-89

LibreNMS: SQL Injection in ajax_table.php spreads through a covert data stream

Critical · published February 20, 2026

CVSS v4.0
9.3
EPSS
1%
Percentile
44.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
9.3 · CRITICAL
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
EPSS
0.00535 · 44.3th percentile
Weakness
CWE-89 · Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Published
2026-02-20T01:17Z
EPSS history
Timeline
  • 20 FEB 01:17Z
    LibreNMS: SQL Injection in ajax_table.php spreads through a covert data stream
    cvelistv5