What’s Vulnerable › Vulnerabilities

CVE-2026-88976: @platejs/core HTML deserialization can trigger browser behavior during parsing

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-16 · updated 2026-09-16
• Weakness: CWE-79

Description

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 products

• udecode plate: before 53.3.11; from 54.0.0-beta.0, <= 54.0.0-beta.1

References

• https://github.com/udecode/plate/commit/d02afe45d5ec3a9fb95e0745bc5820ff18a3c12b
• https://github.com/udecode/plate/pull/5117
• https://github.com/udecode/plate/releases/tag/v53.3.11
• https://github.com/udecode/plate/security/advisories/GHSA-qrfj-mgw8-j9c6

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