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A GitHub-reviewed security advisory, not necessarily under active exploitation the way our CISA KEV advisories are, but a real, disclosed vulnerability in an open-source dependency.
Affected packages
Vulnerable: < 53.3.11
Patched in 53.3.11
Vulnerable: >= 54.0.0-beta.0, <= 54.0.0-beta.1
Details
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.
An attacker who can control HTML later deserialized in another user's browser may be able to execute script in that application's origin.
Upgrade to @platejs/core 53.3.11 or later. Users of the discontinued 54.0.0 beta builds should install the fixed stable line. Applications should also sanitize untrusted HTML before rendering it; inert parsing is not a substitute for sanitization.
EPSS, exploit probability
Low0.34%
estimated chance of real-world exploitation in the next 30 days, higher than 27.2% of every CVE FIRST.org scores
Refreshed 11/2/2026, via FIRST.org's EPSS model, not CVSS, this measures likelihood of exploitation, not how severe it would be.
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A secure code review or supply chain review finds this before an advisory does.