CVE-2026-26990
8.8 · HIGHOverview
CVE-2026-26990 is a high-severity vulnerability affecting librenms librenms. It was published on February 20, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from librenms. Update librenms to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| librenms | librenms | >= 0, < 26.2.0 | Affected |
Frequently Asked Questions
What is CVE-2026-26990?
CVE-2026-26990 is a high-severity vulnerability affecting librenms librenms. It was published on February 20, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).
How severe is CVE-2026-26990?
This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2026-26990?
Check the references section for vendor advisories and patches from librenms. Update librenms to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-26990?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-26990 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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