{"id":"CVE-2026-88976","aliases":["GHSA-qrfj-mgw8-j9c6"],"url":"https://o3.security/vulnerability/CVE-2026-88976","summary":"@platejs/core HTML deserialization can trigger browser behavior during parsing","details":"Plate is a rich-text editor with AI and shadcn/ui. Prior to 53.3.11, and in the discontinued 54.0.0-beta.0 through 54.0.0-beta.1 builds, Plate core HTML deserialization APIs parse supplied HTML strings in the active document. When an application passes untrusted or cross-user HTML to these APIs, certain HTML attributes can trigger browser behavior before the HTML is converted into editor nodes. This can allow attacker-controlled script to execute in the consuming application's origin when another user loads the deserialized content. This issue is fixed in version 53.3.11.","published":"2026-09-16T14:11:39.881Z","modified":"2026-09-18T03:48:32.252401203Z","cvss":{"score":6.1,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"npm","name":"@platejs/core","fixedVersion":"53.3.11"},{"ecosystem":"npm","name":"@platejs/core","fixedVersion":null}],"fix":{"url":"https://github.com/udecode/plate/commit/d02afe45d5ec3a9fb95e0745bc5820ff18a3c12b","label":"udecode/plate@d02afe4"},"references":[{"type":"WEB","url":"https://github.com/udecode/plate/releases/tag/v53.3.11"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/88xxx/CVE-2026-88976.json"},{"type":"ADVISORY","url":"https://github.com/udecode/plate/security/advisories/GHSA-qrfj-mgw8-j9c6"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-88976"},{"type":"FIX","url":"https://github.com/udecode/plate/commit/d02afe45d5ec3a9fb95e0745bc5820ff18a3c12b"},{"type":"FIX","url":"https://github.com/udecode/plate/pull/5117"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-18T03:48:32.252401203Z"}}