Vulnerability library
Security checkSeptember 17, 2026

@platejs/core HTML deserialization can trigger browser behavior during parsing

Understand the exposure, see the recommended fix, and check whether your own website has related weaknesses.

Medium severitynpm@platejs/core

Check your website

Find this and other vulnerabilities with a free scan.

Your scan runs on your computer. No account required.

Description

HTML strings passed to Plate’s core deserialization APIs were parsed in the active document. Certain HTML attributes could therefore trigger browser behavior during parsing, before the content was converted into editor nodes.

Applications that deserialize HTML from untrusted or cross-user sources may be affected.

Recommendation

Update the @platejs/core package to the latest compatible version. Followings are version details:

  • Affected version(s): **>= 54.0.0-beta.0, <= 54.0.0-beta.1 < 53.3.11**
  • Patched version(s): 53.3.11

References

Could your website be exposed too?

SmartScanner can check your website for @platejs/core HTML deserialization can trigger browser behavior during parsing and gives you actionable findings to investigate.

Start a free scan

Related Issues

See something that needs correcting? Let us knowUpdated September 17, 2026