P4Verified

CVE-2026-109357: librenms 0 to before 26.9.0

CVE-2026-109357. CVSS 3.1 base score 8.1 (GitHub Advisory Database).

Affected technology

librenms · 0 to before 26.9.0
librenms

Description’s affected range: before 26.9.0

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · No user interaction required

What an attacker can do

The source says when REMOTE_USER is not forwarded, unauthenticated attackers can send a wildcard username via HTTP Basic Authorization (PHP_AUTH_USER) to match all users and groups and gain admin access. Vendor/CNA’s CVSS 4.0 assessment (base score 9.2/10) rates confidentiality, integrity and availability impact as high.

Published 13-Oct-2026 01:50 UTC

CWE: CWE-90
CCR priority: 32.4 /100 (P4)
CVSS 3.1: 8.1 /10 · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H · GitHub Advisory Database
KEV: no

Provenance

GitHub Advisory Database · Source record · observed 2026-10-13 02:51:46.931182+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-13 01:49:08.152775+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-109357.html