{"id":"CVE-2023-34245","aliases":["GHSA-4882-hxpr-hrvm"],"url":"https://o3.security/vulnerability/CVE-2023-34245","summary":"Cross site scripting (XSS) in @udecode/plate-link","details":"@udecode/plate-link is the link handler for the udecode/plate rich-text editor plugin system for Slate & React. Affected versions of the link plugin and link UI component do not sanitize URLs to prevent use of the `javascript:` scheme. As a result, links with JavaScript URLs can be inserted into the Plate editor through various means, including opening or pasting malicious content. `@udecode/plate-link` 20.0.0 resolves this issue by introducing an `allowedSchemes` option to the link plugin, defaulting to `['http', 'https', 'mailto', 'tel']`. URLs using a scheme that isn't in this list will not be rendered to the DOM. Users are advised to upgrade. Users unable to upgrade are advised to override the `LinkElement` and `PlateFloatingLink` components with implementations that explicitly check the URL scheme before rendering any anchor elements.","published":"2023-06-09T17:04:23.815Z","modified":"2026-09-20T11:45:18.839991832Z","cvss":{"score":8.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"@udecode/plate-link","fixedVersion":"20.0.0"}],"fix":{"url":"https://github.com/udecode/plate/commit/93dd5712854660874900ae12e4d8e6ff28089eb7","label":"udecode/plate@93dd571"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/34xxx/CVE-2023-34245.json"},{"type":"ADVISORY","url":"https://github.com/udecode/plate/security/advisories/GHSA-4882-hxpr-hrvm"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-34245"},{"type":"FIX","url":"https://github.com/udecode/plate/commit/93dd5712854660874900ae12e4d8e6ff28089eb7"},{"type":"WEB","url":"https://github.com/udecode/plate/pull/2240"},{"type":"PACKAGE","url":"https://github.com/udecode/plate"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-20T11:45:18.839991832Z"}}