Remote Code Execution Vulnerability in Plate Rich-Text Editor by udecode
CVE-2026-55596

8.7HIGH

Key Information:

Vendor

Udecode

Status
Plate
Vendor
CVE Published:
8 July 2026

What is CVE-2026-55596?

The Plate Rich-Text Editor versions 53.0.0 through 53.1.4 contain a security flaw in its media embed renderer. This issue allows an attacker to manipulate serialized metadata in a crafted document, bypassing the necessary protocol validation for media URLs. As a result, a malicious actor can embed a JavaScript payload in an iframe, which gets executed when the document is opened by a victim. This vulnerability has been addressed in the latest version 53.1.4, encouraging users to upgrade to mitigate potential risks.

Affected Version(s)

plate >= 53.0.0, < 53.1.4

References

https://github.com/udecode/plate/security/advisories/GHSA...
x_refsource_CONFIRM
https://github.com/udecode/plate/pull/5014
x_refsource_MISC
https://github.com/udecode/plate/commit/6214914ca811adf22...
x_refsource_MISC

CVSS V3.1

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.