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CVE-2026-26988

LibreNMS: SQL Injection in ajax_table.php spreads through a covert data stream

Published: Feb 20, 2026Updated: Feb 20, 2026 Sources: CVE List NVD GHSACWE-89
NVD MITRE
9.1CVSSCRITICAL
EPSS Score
0.4%
Top 68.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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 Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-89

Affected Products

librenmslibrenms
On-prem
Enterprise Software / itsm-monitoring
librenms/librenmsPackagistOSS Libraries
librenmsoss-projectEnterprise Softwareaka librenms/librenms, librenms
packagistpackage-ecosystemOSS Libraries

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Initial Access
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References

https://github.com/librenms/librenms/commit/15429580baba03ed1dd377bada1bde4b7a1175a1
github.com
https://github.com/librenms/librenms/pull/18777
github.com
https://github.com/librenms/librenms/security/advisories/GHSA-h3rv-q4rq-pqcv
github.com
and 1 more references View all →

Timeline

Published
Feb 20, 2026
Last Updated
Feb 20, 2026

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