VulnerabilityAnalyzed

CVE-2026-26988

Versions 25.12.0 and below contain an SQL Injection vulnerability in the ajax_table.php endpoint.

CRITICAL 9.3EPSS 7.44%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (7.44%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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 4.0: 9.3 CRITICALCVSS: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/M
EPSS: 7.44% probability · 94th percentile
CISA KEV: Not listed
Weakness: CWE-89
Affected: librenms/librenms
Source: security-advisories@github.com

References

https://github.com/librenms/librenms/commit/15429580baba03ed1dd377bada1bde4b7a1175a1Patch
https://github.com/librenms/librenms/pull/18777Issue Tracking
https://github.com/librenms/librenms/security/advisories/GHSA-h3rv-q4rq-pqcvExploit, Third Party Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.