{"id":"CVE-2025-48939","aliases":["GHSA-q43x-79jr-cq98"],"url":"https://o3.security/vulnerability/CVE-2025-48939","summary":"tarteaucitron.js vulnerable to DOM Clobbering via document.currentScript","details":"A vulnerability was identified in tarteaucitron.js where document.currentScript was accessed without verifying that it referenced an actual `<script>` element. If an attacker injected an HTML element such as:\n\n```\n<img name=\"currentScript\" src=\"https://malicious.example.com\">\n```\n\nit could clobber the document.currentScript property. This causes the script to resolve incorrectly to an <img> element instead of the <script> tag, leading to unexpected behavior or failure to load the script path correctly.\n\nThis issue arises because in some browser environments, named DOM elements (e.g., name=\"currentScript\") become properties on the global document object.\n\n## Impact\nAn attacker with control over the HTML could exploit this to change the CDN domain of tarteaucitron.\n\n## Fix https://github.com/AmauriC/tarteaucitron.js/commit/230a3b69d363837acfa895823d841e0608826ba3\nThe issue was resolved by verifying that document.currentScript is an instance of HTMLScriptElement. If not, the script now falls back safely to the last <script> tag on the page.","published":"2025-07-03T16:26:31.304Z","modified":"2026-10-28T02:31:13.349207591Z","cvss":{"score":4.2,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:C/C:N/I:L/A:L"},"epss":{"score":0.00177,"percentile":0.07547,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"tarteaucitronjs","fixedVersion":"1.22.0"}],"fix":{"url":"https://github.com/AmauriC/tarteaucitron.js/commit/230a3b69d363837acfa895823d841e0608826ba3","label":"AmauriC/tarteaucitron.js@230a3b6"},"references":[{"type":"ADVISORY","url":"https://github.com/AmauriC/tarteaucitron.js/security/advisories/GHSA-q43x-79jr-cq98"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/48xxx/CVE-2025-48939.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-48939"},{"type":"FIX","url":"https://github.com/AmauriC/tarteaucitron.js/commit/230a3b69d363837acfa895823d841e0608826ba3"},{"type":"PACKAGE","url":"https://github.com/AmauriC/tarteaucitron.js"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-28T02:31:13.349207591Z"}}