CVE-2026-26988
Critical · 9.1CVSS
9.1
EPSS
0.5%
Published
Feb 20, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| Packagist | librenms/librenms | 0 | 26.2.0 |
Related vulnerabilities
- GHSA-h3rv-q4rq-pqcv LibreNMS: SQL Injection in ajax_table.php spreads through a covert data stream. Same vulnerability
- CVE-2024-51092 LibreNMS before 24.10.0 allows a remote attacker to execute arbitrary code via OS command… Also affects librenms/librenms
- CVE-2026-26992 LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. Also affects librenms/librenms
- CVE-2026-26991 LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. Also affects librenms/librenms
- CVE-2026-27016 LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. Also affects librenms/librenms
- CVE-2026-26989 LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. Also affects librenms/librenms
- CVE-2026-26990 LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. Also affects librenms/librenms
- CVE-2026-26987 LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. Also affects librenms/librenms