udecode Plate up to 53.3.10/54.0.0-beta.1 HTML Deserialization APIs HTML injection

Summaryinfo

A vulnerability described as problematic has been identified in udecode Plate up to 53.3.10/54.0.0-beta.1. Affected by this issue is some unknown functionality of the component HTML Deserialization APIs. Such manipulation leads to HTML injection. This vulnerability is documented as CVE-2026-88976. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in udecode Plate up to 53.3.10/54.0.0-beta.1. Affected by this issue is an unknown code block of the component HTML Deserialization APIs. The manipulation with an unknown input leads to a html injection vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-88976 since 09/10/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1059.007.

Upgrading to version 53.3.11 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• udecode

Name

• Plate

Version

• 53.3.0
• 53.3.1
• 53.3.2
• 53.3.3
• 53.3.4
• 53.3.5
• 53.3.6
• 53.3.7
• 53.3.8
• 53.3.9
• 53.3.10
• 54.0.0-beta.0
• 54.0.0-beta.1

Website

• Product: https://github.com/udecode/plate/

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Once again VulDB remains the best source for vulnerability data.

Discussion