CVE-2025-23198: Stored-XSS-LibreNMS-Display-Name in librenms

Description:

XSS on the parameters (Replace $DEVICEID with your specific $DEVICEID value):/device/$DEVICEID/edit -> param: display

of Librenms versions 24.9.0, 24.10.0, and 24.10.1 (https://github.com/librenms/librenms) allows remote attackers to inject malicious scripts. When a user views or interacts with the page displaying the data, the malicious script executes immediately, leading to potential unauthorized actions or data exposure.

Proof of Concept: 1. Add a new device through the LibreNMS interface. 2. Edit the newly created device by going to the "Device Settings" section. 3. In the "Display Name" field, enter the following payload: "><script>alert(1)</script>. !Screenshot from 2024-11-06 09-41-37

4. Save the changes. 5. The XSS payload triggers when accessing the "/apps" path (if an application was previously added). !Screenshot from 2024-11-06 09-42-05 Additional PoC: 1. In the "Display Name" field, enter the following payload: "><img src onerror="alert(1)">. !image

2. The XSS vulnerability is triggered when accessing the "/ports" path, and the payload executes when hovering over the modified value in the "Port" field. !image - on /device/$DEVICEID/ports/arp path: !image

- on /device/$DEVICEID/logs path: !image

- on /search/search=arp/ path: !image

Impact:

Execution of Malicious Code