CVE-2025-64354: Matias Ventura Gutenberg

Medium severity, CVSS 6.5. EPSS: 0.2% chance of exploitation in the next 30 days.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Matias Ventura Gutenberg gutenberg allows Stored XSS.This issue affects Gutenberg: from n/a through <= 21.8.2.

Affected products

• Matias Ventura Gutenberg: up to and including 21.8.2

Published 2025-10-31. Last modified 2026-06-17.