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CVE-2026-26991

MEDIUM

4.8

Beschreibung

LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. In versions 26.1.1 and below, the device group name is not sanitized, allowing attackers with admin privileges to perform Stored Cross-Site Scripting (XSS) attacks. When a user adds a device group, an HTTP POST request is sent to the Request-URI "/device-groups". The name of the newly created device group is stored in the value of the name parameter. After the device group is created, the entry is displayed along with relevant buttons such as Rediscover Devices, Edit, and Delete. This issue has been fixed in version 26.2.0.

CVE Details

CVSS v3.1 Bewertung4.8

SchweregradMEDIUM

CVSS VektorCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

AngriffsvektorNETWORK

KomplexitatLOW

Erforderliche PrivilegienHIGH

BenutzerinteraktionREQUIRED

Veroffentlicht2/20/2026

Zuletzt geandert2/20/2026

Quellenvd

Honeypot-Sichtungen0

Betroffene Produkte

librenms:librenms

Schwachen (CWE)

CWE-79

Referenzen

https://github.com/librenms/librenms/commit/64b31da444369213eb4559ec1c304ebfaa0ba12c(security-advisories@github.com)

https://github.com/librenms/librenms/pull/19041(security-advisories@github.com)

https://github.com/librenms/librenms/releases/tag/26.2.0(security-advisories@github.com)

https://github.com/librenms/librenms/security/advisories/GHSA-5pqf-54qp-32wx(security-advisories@github.com)

IOC Korrelationen

Keine Korrelationen erfasst

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