5.4

CVE-2026-27016

LibreNMS has Stored XSS in Custom OID - unit parameter missing strip_tags()

LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. Versions 24.10.0 through 26.1.1 are vulnerable to Stored XSS via the unit parameter in Custom OID. The Custom OID functionality lacks strip_tags() sanitization while other fields (name, oid, datatype) are sanitized. The unsanitized value is stored in the database and rendered without HTML escaping. This issue is fixed in version 26.2.0.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Librenms ≫ Librenms Version >= 24.10.0 < 26.2.0
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.23% 0.132
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
security-advisories@github.com 5.4 2.3 2.7
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CWE-116 Improper Encoding or Escaping of Output

The product prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. As a result, the intended structure of the message is not preserved.

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

https://github.com/librenms/librenms/releases/tag/26.2.0
Product
Release Notes
https://github.com/librenms/librenms/commit/3bea263e02441690c01dea7fa3fe6ffec94af335
Patch
https://github.com/librenms/librenms/pull/19040
Issue Tracking
https://github.com/librenms/librenms/security/advisories/GHSA-fqx6-693c-f55g
Third Party Advisory