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TI-2026-21469 Aliases CVE-2026-26990GHSA-79q9-wc6p-cf92

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

Priority MEDIUM 47CWE-89Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
SQL injection
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-89.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.04467 91st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed librenms (librenms): 26.2.0librenms/librenms (Packagist): 26.2.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
librenmslibrenmsbefore 26.2.026.2.0Patch availableCNA
—librenms/librenms (Packagist)before 26.2.026.2.0Patch availableGHSA-79q9-wc6p-cf92
  • librenms Vendorlibrenms Affected before 26.2.0 Fixed in 26.2.0 Patch available CNA
  • librenms/librenms (Packagist) Vendor— Affected before 26.2.0 Fixed in 26.2.0 Patch available GHSA-79q9-wc6p-cf92

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:librenms:librenms:*:*:*:*:*:*:*:*before 26.2.0Vulnerablelibrenms
  • cpe:2.3:a:librenms:librenms:*:*:*:*:*:*:*:* Versions before 26.2.0 Vulnerable ·librenms

Remediation

  • Fix · CNA librenms (librenms) Fixed in 26.2.0
  • Fix · GHSA-79q9-wc6p-cf92 librenms/librenms (Packagist) Fixed in 26.2.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-26990
  2. 2026-10-03 Alias added: GHSA-79q9-wc6p-cf92
  3. 2026-10-18 EPSS moved to the 50th–90th percentile
  4. 2026-10-25 EPSS moved to the 90th–95th percentile

References

Exploit 1

Patch 1

Other 2

  • TI-2018-14479 LibreNMS 1.46 allows remote attackers to execute arbitrary OS commands by using the… CVSS 3.0CRITICAL 9.8
  • TI-2026-59134 LibreNMS before 26.8.0 Authentication Bypass via API Token Type Confusion CVSS 4.0CRITICAL 9.2
  • TI-2022-03735 Insufficient Session Expiration in librenms/librenms CVSS 3.1CRITICAL 9.8
  • TI-2022-03252 Deserialization of Untrusted Data in librenms/librenms CVSS 3.1HIGH 8.8
  • TI-2026-05445 OS command injection in librenms CVSS 4.0HIGH 8.5
  • TI-2024-34235 LibreNMS before 24.10.0 allows a remote attacker to execute arbitrary code via OS command… CVSS 3.1CRITICAL 9.1
See all 105 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences