medium6.1
CVE-2026-88976
@platejs/core HTML deserialization can trigger browser behavior during parsing
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | @platejs/core | < 53.3.11 | 53.3.11 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-qrfj-mgw8-j9c6
- https://github.com/udecode/plate/security/advisories/GHSA-qrfj-mgw8-j9c6
- https://nvd.nist.gov/vuln/detail/CVE-2026-88976
- https://github.com/udecode/plate/pull/5117
- https://github.com/udecode/plate/commit/d02afe45d5ec3a9fb95e0745bc5820ff18a3c12b
- https://github.com/udecode/plate/releases/tag/v53.3.11