CVE-2026-26990
LibreNMS has Time-Based Blind SQL Injection in address-search.inc.php
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.
INFO
Published Date :
Feb. 20, 2026, 2:16 a.m.
Last Modified :
Feb. 20, 2026, 4:24 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update LibreNMS to version 26.2.0 or later.
- Ensure proper input validation and parameter binding.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-26990.
| URL | Resource |
|---|---|
| https://github.com/librenms/librenms/commit/15429580baba03ed1dd377bada1bde4b7a1175a1 | Patch |
| https://github.com/librenms/librenms/pull/18777 | Issue Tracking |
| https://github.com/librenms/librenms/security/advisories/GHSA-79q9-wc6p-cf92 | Exploit Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-26990 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-26990
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-26990 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-26990 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Feb. 20, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:librenms:librenms:*:*:*:*:*:*:*:* versions up to (excluding) 26.2.0 Added Reference Type GitHub, Inc.: https://github.com/librenms/librenms/commit/15429580baba03ed1dd377bada1bde4b7a1175a1 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/librenms/librenms/pull/18777 Types: Issue Tracking Added Reference Type GitHub, Inc.: https://github.com/librenms/librenms/security/advisories/GHSA-79q9-wc6p-cf92 Types: Exploit, Third Party Advisory -
New CVE Received by [email protected]
Feb. 20, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-89 Added Reference https://github.com/librenms/librenms/commit/15429580baba03ed1dd377bada1bde4b7a1175a1 Added Reference https://github.com/librenms/librenms/pull/18777 Added Reference https://github.com/librenms/librenms/security/advisories/GHSA-79q9-wc6p-cf92