CVE-2026-15101— WPBakery Page Builder <= 8.7.4 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'data' Parameter
Quick assessment
Affected
wpbakery WPBakery Page Builder
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
WordPress 的 WPBakery Page Builder 插件存在存储型跨站脚本（Stored Cross-Site Scripting）漏洞，影响版本包括 8.7.4 及更早的所有版本。该漏洞是由于对 “data” 参数的输入清洗和输出转义不足所致。这使得拥有订阅者权限或更高权限的已认证攻击者能够向页面注入任意 Web 脚本，这些脚本将在用户访问被注入的页面时执行。在保存阶段应用的 清洗无法中和攻击载荷，因为恶意脚本内容以纯字母数字文本形式进行 base64 编码，不含任何可被移除的 HTML 标签；随
Possible ATT&CK Techniques 1 AI
T1189 · Drive-by Compromise
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I. Basic Information for CVE-2026-15101
Vulnerability Information
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Vulnerability Title
WPBakery Page Builder <= 8.7.4 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'data' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The WPBakery Page Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'data' parameter in all versions up to, and including, 8.7.4 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The wp_kses_post sanitization applied during save does not neutralize the payload because the malicious script content is base64-encoded as plain alphanumeric text with no HTML tags to strip; the vc_raw_html shortcode template then decodes and echoes this content unescaped at render time.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| wpbakery | WPBakery Page Builder | 0 ~ 8.7.4 | - |
|
II. Public POCs for CVE-2026-15101
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Other References for CVE-2026-15101 (5)
IV. Related Vulnerabilities
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V. Comments for CVE-2026-15101
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