CVE-2026-26991: librenms

csirt@kutim:~/threat-intel/cve/CVE-2026-26991

CVSS 4.8 · Medium EPSS 0,33%

Kerentanan Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') pada librenms. Skor CVSS 3.1 4.8 (Medium) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD: 20 Februari 2026
Terakhir diubah: 17 Juni 2026
Status NVD: Analyzed
CVSS 3.1: 4.8 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
EPSS (30 hari): 0,33% peluang dieksploitasi; lebih tinggi dari 24,3% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
librenms	librenms	Semua versi sebelum 26.2.0

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

https://github.com/librenms/librenms/commit/64b31da444369213eb4559ec1c304ebfaa0ba12c patch
https://github.com/librenms/librenms/security/advisories/GHSA-5pqf-54qp-32wx exploit · advisory pihak ketiga
https://github.com/librenms/librenms/pull/19041 issue tracking
https://github.com/librenms/librenms/releases/tag/26.2.0 product · release notes

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:11 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.