CVE-2026-26988

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 ajaxtable.php endpoint. The application fails to properly sanitize or parameterize user input when processing IPv6 address searches. Specifically,...

CVE-2026-27016

LibreNMS (versions 24.10.0–26.1.1) contains a Stored XSS in the Custom OID unit field due to missing strip_tags() sanitization (unit is taken from POST without sanitization; other fields are sanitized). The unsanitized value is stored and rendered without HTML escaping in device graphs, enabling ...

CVE-2026-27016 LibreNMS has Stored XSS in Custom OID - unit parameter missing strip_tags()

LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. Versions 24.10.0 through 26.1.1 are vulnerable to Stored XSS via the unit parameter in Custom OID. The Custom OID functionality lacks striptags sanitization while other fields name, oid, datatype are sanitized. The...

CVE-2026-27016

LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. Versions 24.10.0 through 26.1.1 are vulnerable to Stored XSS via the unit parameter in Custom OID. The Custom OID functionality lacks striptags sanitization while other fields name, oid, datatype are sanitized. The...

CVE-2026-27016 LibreNMS has Stored XSS in Custom OID - unit parameter missing strip_tags()

LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. Versions 24.10.0 through 26.1.1 are vulnerable to Stored XSS via the unit parameter in Custom OID. The Custom OID functionality lacks striptags sanitization while other fields name, oid, datatype are sanitized. The...

CVE-2026-27016 LibreNMS has Stored XSS in Custom OID - unit parameter missing strip_tags()

LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. Versions 24.10.0 through 26.1.1 are vulnerable to Stored XSS via the unit parameter in Custom OID. The Custom OID functionality lacks striptags sanitization while other fields name, oid, datatype are sanitized. The...

CVE-2026-26990

Summary: CVE-2026-26990 affects LibreNMS versions 25.12.0 and below, with a Time-Based Blind SQL Injection in the address-search.inc.php component via the address parameter. The issue arises when a crafted subnet prefix is supplied, causing the prefix value to be concatenated into SQL without pro...

CVE-2026-26990 LibreNMS has Time-Based Blind SQL Injection in address-search.inc.php

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 int...

CVE-2026-26990 LibreNMS has Time-Based Blind SQL Injection in address-search.inc.php

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 int...

CVE-2026-26990

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 int...

CVE-2026-26990 LibreNMS has Time-Based Blind SQL Injection in address-search.inc.php

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 int...

CVE-2026-26989

LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. Versions 25.12.0 and below are affected by a Stored Cross-Site Scripting XSS vulnerability in the Alert Rules workflow. An attacker with administrative privileges can inject malicious scripts that execute in the browser...

CVE-2026-26989 LibreNMS has Stored XSS in Alert Rule

LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. Versions 25.12.0 and below are affected by a Stored Cross-Site Scripting XSS vulnerability in the Alert Rules workflow. An attacker with administrative privileges can inject malicious scripts that execute in the browser...

CVE-2026-26989 LibreNMS has Stored XSS in Alert Rule

LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. Versions 25.12.0 and below are affected by a Stored Cross-Site Scripting XSS vulnerability in the Alert Rules workflow. An attacker with administrative privileges can inject malicious scripts that execute in the browser...

CVE-2026-26989 LibreNMS has Stored XSS in Alert Rule

LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. Versions 25.12.0 and below are affected by a Stored Cross-Site Scripting XSS vulnerability in the Alert Rules workflow. An attacker with administrative privileges can inject malicious scripts that execute in the browser...

CVE-2026-26989

LibreNMS contains a Stored XSS in the Alert Rules workflow in versions 25.12.0 and earlier, due to vulnerable code in alert_rule_list.inc.php. The underlying issue is that admin users can inject scripts that execute in other users’ browsers when viewing the Alert Rules page. Impact is limited to ...

CVE-2026-26988 LibreNMS: SQL Injection in ajax_table.php spreads through a covert data stream

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 ajaxtable.php endpoint. The application fails to properly sanitize or parameterize user input when processing IPv6 address searches. Specifically,...

CVE-2026-26988 LibreNMS: SQL Injection in ajax_table.php spreads through a covert data stream

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 ajaxtable.php endpoint. The application fails to properly sanitize or parameterize user input when processing IPv6 address searches. Specifically,...

CVE-2026-26988

CVE-2026-26988 affects LibreNMS (versions ≤ 25.12.0) via an SQL Injection in the IPv6 address search path of the ajax_table.php endpoint. The root cause is that the address parameter is split into an address and a prefix, and the prefix is directly concatenated into the SQL query without validati...

CVE-2026-26988 LibreNMS: SQL Injection in ajax_table.php spreads through a covert data stream

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 ajaxtable.php endpoint. The application fails to properly sanitize or parameterize user input when processing IPv6 address searches. Specifically,...