Vulnerability Description
LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. Versions 25.12.0 and below have a Time-Based Blind SQL Injection vulnerability in address-search.inc.php via the address parameter. When a crafted subnet prefix is supplied, the prefix value is concatenated directly into an SQL query without proper parameter binding, allowing an attacker to manipulate query logic and infer database information through time-based conditional responses. This vulnerability requires authentication and is exploitable by any authenticated user. This issue has been fixedd in version 26.2.0.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Librenms | Librenms | < 26.2.0 |
Related Weaknesses (CWE)
References
- https://github.com/librenms/librenms/commit/15429580baba03ed1dd377bada1bde4b7a11Patch
- https://github.com/librenms/librenms/pull/18777Issue Tracking
- https://github.com/librenms/librenms/security/advisories/GHSA-79q9-wc6p-cf92ExploitThird Party Advisory
FAQ
What is CVE-2026-26990?
CVE-2026-26990 is a vulnerability with a CVSS score of 8.8 (HIGH). LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. Versions 25.12.0 and below have a Time-Based Blind SQL Injection vulnerability in address-search.inc.php via the address p...
How severe is CVE-2026-26990?
CVE-2026-26990 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-26990?
Check the references section above for vendor advisories and patch information. Affected products include: Librenms Librenms.