LibreNMS vulnerable to Stored Cross-site Scripting through unsanitized /device-groups name
Description
LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. In versions 26.1.1 and below, the device group name is not sanitized, allowing attackers with admin privileges to perform Stored Cross-Site Scripting (XSS) attacks. When a user adds a device group, an HTTP POST request is sent to the Request-URI "/device-groups". The name of the newly created device group is stored in the value of the name parameter. After the device group is created, the entry is displayed along with relevant buttons such as Rediscover Devices, Edit, and Delete. This issue has been fixed in version 26.2.0.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
librenms/librenmsPackagist | < 26.2.0 | 26.2.0 |
Affected products
1Patches
164b31da44436Fix device group delete xss (#19041)
1 file changed · +4 −2
resources/views/device-group/index.blade.php+4 −2 modified@@ -54,7 +54,8 @@ class="fa fa-retweet" aria-hidden="true"></i></button> href="{{ route('device-groups.edit', $device_group->id) }}"> <i class="fa fa-pencil" aria-hidden="true"></i></a> <button type="button" class="btn btn-danger btn-sm" title="{{ __('delete Device Group') }}" aria-label="{{ __('Delete') }}" - onclick="delete_dg(this, '{{ $device_group->name }}', '{{ route('device-groups.destroy', $device_group->id) }}')"> + data-group-name="{{ $device_group->name }}" + onclick="delete_dg(this, '{{ route('device-groups.destroy', $device_group->id) }}')"> <i class="fa fa-trash" aria-hidden="true"></i></button> </td> @@ -69,8 +70,9 @@ class="fa fa-trash" aria-hidden="true"></i></button> @section('scripts') <script> - function delete_dg(button, name, url) { + function delete_dg(button, url) { var index = button.parentNode.parentNode.rowIndex; + var name = button.dataset.groupName; if (confirm('{{ __('Are you sure you want to delete ') }}' + name + '?')) { $.ajax({
Vulnerability mechanics
Generated by null/stub on May 9, 2026. Inputs: CWE entries + fix-commit diffs from this CVE's patches. Citations validated against bundle.
References
6- github.com/advisories/GHSA-5pqf-54qp-32wxghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-26991ghsaADVISORY
- github.com/librenms/librenms/commit/64b31da444369213eb4559ec1c304ebfaa0ba12cghsax_refsource_MISCWEB
- github.com/librenms/librenms/pull/19041ghsax_refsource_MISCWEB
- github.com/librenms/librenms/releases/tag/26.2.0ghsax_refsource_MISCWEB
- github.com/librenms/librenms/security/advisories/GHSA-5pqf-54qp-32wxghsax_refsource_CONFIRMWEB
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