{"id":"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.","aliases":["GHSA-qrfj-mgw8-j9c6"],"modified":"2026-09-18T03:48:32.252401203Z","published":"2026-09-16T14:11:39.881Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-79"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/88xxx/CVE-2026-88976.json"},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/udecode/plate","events":[{"introduced":"d142cfb5b9358d97b3ec67448e7e00be41f067a4"},{"fixed":"118fa9be912d479e37d840f3300cf9dd6b6de0e3"},{"fixed":"d02afe45d5ec3a9fb95e0745bc5820ff18a3c12b"},{"fixed":"c6801761b10a81e54b8f2e91e5ecbd20414e2939"}],"database_specific":{"source":["DESCRIPTION","REFERENCES"],"extracted_events":[{"introduced":"54.0.0-beta.0"},{"fixed":"54.0.0-beta.1"}]}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-88976.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"}]}