Improper Restriction of Excessive Authentication Attempts in LibreNMS - CVE-2023-46745
Published: November 17, 2023 / Updated: May 5, 2026
Vulnerability identifier: #VU129751
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2023-46745
CWE-ID: CWE-307
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: LibreNMS Project
Affected software:
LibreNMS
LibreNMS
Detailed vulnerability description
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to improper restriction of excessive authentication attempts in the login page authentication handler when processing GET-based authentication requests. A remote attacker can send repeated authentication requests to brute-force user accounts to disclose sensitive information.
One login method uses GET requests for authentication, which may expose submitted credentials in web server logs.
How to mitigate CVE-2023-46745
Install security update from vendor's website.