CVE-2023-46745: Rate limiting Bypass on login page in libreNMS

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-11-17 · updated 2026-06-17
Weakness: CWE-307

Description

LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring which includes support for a wide range of network hardware and operating systems. In affected versions the login method has no rate limit. An attacker may be able to leverage this vulnerability to gain access to user accounts. This issue has been addressed in version 23.11.0. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Affected products

librenms: before 23.11.0 — fixed in 23.11.0

How to fix

Upgrade to a fixed version: librenms 23.11.0. Check the vendor advisory for mitigations.

References

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