Librenms
CVE-2026-26990
HIGH
GHSA-79q9-wc6p-cf92
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessAuthenticate to LibreNMS
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DeliveryCraft malicious subnet prefix parameter
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ExploitInject SQL time-based payload into address-search.inc.php
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ExecutionManipulate SQL query logic
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ImpactExfiltrate database information via response timing
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Parameterized queries, prepared statements
MITRE ATT&CK
2 techniques across 2 tactics: Initial Access, Persistence The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Exploitation Conditions | Authenticated access to LibreNMS versions 25.12.0 and below; attacker must have valid user credentials; vulnerable address-search.inc.php endpoint must be accessible; database must process time-based conditional queries on the supplied subnet prefix parameter without sanitization. |
| Impact | CVSS 8.8 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: Low. User interaction: None. Exploitation requires authentication. Exploitable via remote/network. Public exploit/POC available. |
| Exploit ScenarioDerived | A remote attacker (requires authentication) could exploit this vulnerability to compromise the affected system. |
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Alert meAnalysisAIv1 – Mar 12, 2026
SQL injection in LibreNMS versions 25.12.0 and below allows authenticated users to extract sensitive database information through time-based blind SQL injection in the address-search function. An attacker with valid credentials can manipulate the subnet prefix parameter to bypass query logic and infer data through conditional timing responses. Public exploit code exists for this vulnerability; upgrade to version 26.2.0 or later to remediate.
Earlier versions of this analysis (1)
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. [CVSS 8.8 HIGH]
RemediationAI
A vendor patch is available — apply it immediately. Use parameterized queries. Implement input validation. Restrict network access to the affected service where possible.
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in composer
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
Classified as CWE-89 (SQL Injection). Affects the address component of Librenms. 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 authen
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Primary rating from GitHub Advisory · only source for this CVE.
CVSS VectorGitHub Advisory
Lifecycle Timeline
3DescriptionGitHub Advisory
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.
Executive ViewAI
LibreNMS instances running version 25.12.0 or earlier are vulnerable to SQL injection attacks that could allow unauthorized database access and potential data exfiltration of network monitoring data. Organizations using LibreNMS for critical network visibility should prioritize patching immediately, as public exploits are available and the vulnerability carries a CVSS score of 8.8.
Apply vendor patch. If immediate patching is not possible: (1) Implement Web Application Firewall rules to block SQL injection patterns in the address parameter; (2) Restrict network access to LibreNMS to authorized internal networks only; (3) Monitor database query logs for suspicious SQL injection attempts; (4) Disable the address-search functionality if not operationally required.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
SQL injection exploits the way applications construct database queries by mixing user input directly into SQL statements.
Affected Products (CPE)GitHub Advisory
An issue was discovered in LibreNMS through 1.47. Rated high severity (CVSS 7.2), this vulnerability is remotely exploit
Librenms 21.11.0 is affected by a path manipulation vulnerability in includes/html/pages/device/showconfig.inc.php. Rate
An issue was discovered in LibreNMS through 1.47. Rated critical severity (CVSS 9.8), this vulnerability is remotely exp
Authentication bypass in the LibreNMS REST API (all versions before 26.8.0) lets unauthenticated remote attackers reach
SQL injection in LibreNMS 25.12.0 and below. PoC and patch available.
An issue was discovered in LibreNMS through 1.47. Rated critical severity (CVSS 9.1), this vulnerability is remotely exp
LibreNMS is an open-source, PHP/MySQL/SNMP-based network monitoring system. Rated high severity (CVSS 8.8), this vulnera
An issue was discovered in LibreNMS before 1.65.1. Rated high severity (CVSS 8.8), this vulnerability is remotely exploi
An issue was discovered in LibreNMS 1.50.1. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable,
An issue was discovered in LibreNMS through 1.47. Rated high severity (CVSS 8.8), this vulnerability is remotely exploit
Command injection in LibreNMS's Virtualization Discovery module enables authenticated administrator-level users to execu
Remote code execution in LibreNMS network monitoring platform (versions prior to 26.3.0) allows authenticated administra
Exploit-DB