CVE-2026-26990highCWE-89

CVE-2026-26990: high-severity vulnerability in librenms

LibreNMS has Time-Based Blind SQL Injection in address-search.inc.php

Published

Follow this CVE+ Monitor librenms+ Monitor librenms/librenms

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 8.8epss 4.5%
In short

LibreNMS has a SQL injection flaw in its address search feature that allows authenticated users to extract database information by sending specially crafted requests and timing the responses. An attacker can gradually discover sensitive data from the database without needing direct access.

Technical detail

Time-based blind SQL injection in address-search.inc.php via the address parameter; vulnerable versions concatenate user-supplied subnet prefix directly into SQL queries without parameterized statements. Requires authentication; allows an attacker to infer database structure and content through conditional time delays in query responses.

Summary generated and translated by AI from the official 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:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
librenms · librenms
Related CVEs — librenms

In the same product, most dangerous first.

CVE-2024-49754HIGHLibreNMS has a stored XSS ('Cross-site Scripting') in librenms/includes/html/pages/api-access.inc.phpEPSS 73.9%CVE-2025-23200MEDIUMStored XSS-LibreNMS-Misc Section in librenmsEPSS 49.3%CVE-2024-50352MEDIUMLibreNMS has a Stored XSS ('Cross-site Scripting') in librenms/includes/html/pages/device/overview/services.inc.phpEPSS 41.4%CVE-2024-32479HIGHLibreNMS's Improper Sanitization on Service template name leads to Stored XSSEPSS 34.1%CVE-2024-47525HIGHStored XSS ('Cross-site Scripting') in librenms/includes/html/print-alert-rules.phpEPSS 29.6%CVE-2024-32480HIGHLibreNMS's Time-Based Blind SQL injection leads to database extractionEPSS 20.3%