CVE-2024-49758 LibreNMS has a stored XSS in ExamplePlugin with Device's Notes

What is CVE-2024-49758?

CVE-2024-49758 is a medium-severity cross-site scripting vulnerability in Librenms Librenms, published on 15 Nov 2024. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

LibreNMS is an open-source, PHP/MySQL/SNMP-based network monitoring system. User with Admin role can add Notes to a device, the application did not properly sanitize the user input, when the ExamplePlugin enable, if java script code is inside the device's Notes, its will be trigger. This vulnerability is fixed in 24.10.0.

Weakness: CWE-79

Which versions are affected by CVE-2024-49758?

2 open source packages ship an affected version, including librenms/librenms. It affects 1 product.

Products include Librenms Librenms.

How do I fix CVE-2024-49758?

Upgrade librenms/librenms to 24.10.0 or later.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2024-49758 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-49758 exists.

Other vulnerabilities in Librenms Librenms

• CVE-2023-4982 Cross-site Scripting (XSS) - Stored in librenms/librenms Critical 9.8
• CVE-2022-29712 Command injection in librenms Critical 9.8
• CVE-2021-44278 Path traversal in librenms/librenms Critical 9.8
• CVE-2019-10665 LibreNMS Information Disclosure Critical 9.8
• CVE-2018-20434 LibreNMS arbitrary OS commands execution Critical 9.8

All Librenms Librenms vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-c86q-rj37-8f85.