CVE-2026-26988

CRITICAL EPSS 93.7%
Published Feb 20, 20264mo ago · Modified Jun 17, 20262w ago
9.3 CVSS 4.0
Critical
Find Similar
Published Feb 20, 2026 4mo ago
Last Modified Jun 17, 2026 2w ago

Description

LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. Versions 25.12.0 and below contain an SQL Injection vulnerability in the ajax_table.php endpoint. The application fails to properly sanitize or parameterize user input when processing IPv6 address searches. Specifically, the address parameter is split into an address and a prefix, and the prefix portion is directly concatenated into the SQL query string without validation. This allows an attacker to inject arbitrary SQL commands, potentially leading to unauthorized data access or database manipulation. This issue has been fixed in version 26.2.0.

CVSS Details

Base Score
9.3
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
93.7% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-89 SQL Injection Injection

Affected Products 1

VendorProductVersionRange
librenmslibrenms* <26.2.0

References 3

  • github.com https://github.com/librenms/librenms/commit/15429580baba03ed1dd377bada1bde4b7a1175a1
    Patch
  • github.com https://github.com/librenms/librenms/pull/18777
    Issue Tracking
  • github.com https://github.com/librenms/librenms/security/advisories/GHSA-h3rv-q4rq-pqcv
    ExploitThird Party Advisory

Remediation

  • github.com https://github.com/librenms/librenms/commit/15429580baba03ed1dd377bada1bde4b7a1175a1
    Patch