SB2026042415 - Multiple vulnerabilities in LibreNMS

Description

This security bulletin contains information about 2 vulnerabilities.

1) PHP file inclusion (CVE-ID: CVE-2025-54138)

CWE-ID: CWE-98 - Improper Control of Filename for Include/Require Statement in PHP Program

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote user to execute arbitrary code.

The vulnerability exists due to improper control of filename for include statement in ajax_form.php when processing a user-controlled POST type parameter for dynamic inclusion of .inc.php files. A remote user can send a specially crafted request to execute arbitrary code.

Exploitation requires control of a file or symlink at includes/html/forms/{type}.inc.php.

2) Cross-site scripting (CVE-ID: CVE-2025-62365)

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

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to execute arbitrary script in a user's browser.

The vulnerability exists due to cross-site scripting in the report_this function in librenms/includes/functions.php when handling the project_issues parameter. A remote attacker can supply a specially crafted parameter value to execute arbitrary script in a user's browser.

Remediation

Install update from vendor's website.

References

• https://github.com/librenms/librenms/security/advisories/GHSA-gq96-8w38-hhj2
• https://github.com/librenms/librenms/security/advisories/GHSA-86rg-8hc8-v82p
• https://github.com/advisories/GHSA-86rg-8hc8-v82p