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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.

WPBakery Page Builder是Wpbakery公司的一款拖拽式可视化页面构建插件。 WPBakery Page Builder 8.7.4及之前版本存在跨站脚本漏洞，该漏洞源于对'data'参数输入清理和输出转义不足，可能导致经过身份验证的攻击者（具有订阅者级别及以上权限）注入任意Web脚本，在用户访问被注入页面时执行。

CVSS 6.4 · Medium EPSS 0.20% · P10

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise

Affected Version Matrix 1

VendorProduct Version RangeStatus
wpbakery WPBakery Page Builder ≤ 8.7.4 affected
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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
Vulnerability Title
WPBakery Page Builder 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WPBakery Page Builder是Wpbakery公司的一款拖拽式可视化页面构建插件。 WPBakery Page Builder 8.7.4及之前版本存在跨站脚本漏洞，该漏洞源于对'data'参数输入清理和输出转义不足，可能导致经过身份验证的攻击者（具有订阅者级别及以上权限）注入任意Web脚本，在用户访问被注入页面时执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
wpbakery WPBakery Page Builder 0 ~ 8.7.4 -

II. Public POCs for CVE-2026-15101

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III. Intelligence Information for CVE-2026-15101

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Vendor Advisories for CVE-2026-15101 (1)

Proof of Concept for CVE-2026-15101 (1)

Other References for CVE-2026-15101 (3)

IV. Related Vulnerabilities

Same product: WPBakery Page Builder
Same vendor: wpbakery
Same weakness: CWE-79

V. Comments for CVE-2026-15101

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