CVE-2025-55296: LibreNMS allows stored XSS in Alert Template name field

August 18, 2025

A stored Cross-Site Scripting (XSS) vulnerability exists in LibreNMS (<= 25.6.0) in the Alert Template creation feature. This allows a user with the admin role to inject malicious JavaScript, which will be executed when the template is rendered, potentially compromising other admin accounts.

References

github.com/advisories/GHSA-vxq6-8cwm-wj99
github.com/librenms/librenms
github.com/librenms/librenms/commit/8ade3d827d317f5ac4b336617aafff865f825958
github.com/librenms/librenms/security/advisories/GHSA-vxq6-8cwm-wj99
nvd.nist.gov/vuln/detail/CVE-2025-55296

Code Behaviors & Features

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