CVE-2020-15875
Received Received - Intake

SQL Injection in LibreNMS

Publication date: 2026-09-13

Last updated on: 2026-09-13

Assigner: MITRE

Description
An issue was discovered in LibreNMS 1.65. A remote authenticated attacker with normal privileges can extract all the information from the LibreNMS database via a SQL injection in the searchPhrase parameter in the /ajax_table.php API endpoint. This affects as-selection.inc.php, edit-ports.inc.php, alertlog-stats.inc.php, alerts.inc.php, eventlog.inc.php, inventory.inc.php, ix-list.inc.php, ix-peers.inc.php, mempool-edit.inc.php, mempool.inc.php, poll-log.inc.php, processor-edit.inc.php, processor.inc.php, routing-edit.inc.php, sensors-common.inc.php, storage-edit.inc.php, storage.inc.php, and toner.inc.php (in includes/html/table). NOTE: some sources refer to this as CVE-2020-15876, but CVE-2020-15875 is the only correct CVE ID.

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Meta Information

Published
2026-09-13
Last Modified
2026-09-13
Generated
2026-09-14
AI Q&A
2026-09-13
EPSS Evaluated
N/A
NVD
CVE-2020-15875
EUVD
EUVD-2020-31272

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
librenms librenms 1.65
librenms librenms 1.65.1

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-89 The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.

Attack-Flow Graph

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Executive Summary

CVE-2020-15875 is a SQL injection vulnerability in LibreNMS version 1.65. An attacker with normal user privileges can exploit the searchPhrase parameter in the /ajax_table.php API endpoint to inject malicious SQL queries. This allows them to extract sensitive data from the database, such as usernames and hashed passwords.

Detection Guidance

To detect this vulnerability, check if your LibreNMS instance is running version 1.65 or earlier. Inspect network traffic for SQL injection attempts in the /ajax_table.php endpoint, particularly with the searchPhrase parameter. Review database logs for unusual queries or unauthorized data access patterns.

Impact Analysis

An attacker could steal sensitive data like user credentials or network configurations. They might also manipulate or delete database records, leading to service disruption or unauthorized access to monitoring systems. The impact depends on the data stored in LibreNMS.

Compliance Impact

This vulnerability could lead to unauthorized data access, violating GDPR's data protection principles or HIPAA's security requirements for protected health information. Organizations using LibreNMS may face compliance violations if sensitive data is exposed.

Mitigation Strategies

Upgrade LibreNMS to version 1.65.1 or later immediately. This version patches the SQL injection vulnerabilities by implementing parameterized queries. If upgrading is not possible, restrict access to the /ajax_table.php endpoint and monitor for suspicious activity.

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