CVE-2026-4658— Gutenberg Essential Blocks <= 6.0.4 存储型XSS漏洞

CVSS 6.4 · Medium EPSS 0.02% · P7 更新于 2026-05-05

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一、漏洞 CVE-2026-4658 基础信息

AIGC 神龙大模型
美国国家漏洞数据库 NVD

漏洞信息

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Vulnerability Title

Gutenberg Essential Blocks <= 6.0.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via Block Attributes

来源: 美国国家漏洞数据库 NVD

Vulnerability Description

The Essential Blocks – Page Builder Gutenberg Blocks, Patterns & Templates plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the className, classHook, and blockId attributes in the Add to Cart block (essential-blocks/add-to-cart) in all versions up to, and including, 6.0.4. This is due to insufficient output escaping in the render_callback() function where these attributes are placed into class and data-id HTML attributes using raw sprintf() and implode() without esc_attr() escaping. While the outer wrapper div uses get_block_wrapper_attributes() which properly escapes, the inner divs do not. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

来源: 美国国家漏洞数据库 NVD