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ID:12421 - Exploit for Stored cross-site scripting in LibreNMS - CVE-2026-27016
ID:12421 - Exploit for Stored cross-site scripting in LibreNMS - CVE-2026-27016
Published: February 19, 2026
Vulnerability identifier: #VU123078
Vulnerability risk: Low
CVE-ID: CVE-2026-27016
CWE-ID: CWE-79
Exploitation vector: Remote access
Vulnerable software:
LibreNMS
LibreNMS
Link to public exploit:
Vulnerability description
The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data in "unit" parameter in Custom OID functionality. A remote user can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
Remediation
Install updates from vendor's website.