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CVE-2026-6172— Bold Page Builder <= 5.7.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'caption' Parameter

Quick assessment

Affected
boldthemes Bold 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 Bold Page Builder 插件在包括 5.7.2 在内的所有版本中，由于对用户提供的属性缺乏充分的输入清理和输出转义，其 短代码中的 'caption' 参数存在存储型跨站脚本（Stored XSS）漏洞。这使得拥有 Contributor（贡献者）级别及以上权限的已认证攻击者能够向页面中注入任意 Web 脚本，当用户访问被注入的页面时，这些脚本将会执行。

CVSS 6.4 · Medium EPSS 0.16% · P4

Possible ATT&CK Techniques 1 AI

T1059.007 · JavaScript

Affected Version Matrix 1

VendorProduct Version RangeStatus
boldthemes Bold Page Builder ≤ 5.7.2 affected
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I. Basic Information for CVE-2026-6172

Vulnerability Information
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Vulnerability Title
Bold Page Builder <= 5.7.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'caption' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The Bold Page Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'caption' parameter of the plugin's bt_bb_image shortcode in all versions up to, and including, 5.7.2 due to insufficient input sanitization and output escaping on user-supplied attributes. 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.
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
boldthemes Bold Page Builder 0 ~ 5.7.2 -

II. Public POCs for CVE-2026-6172

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III. Intelligence Information for CVE-2026-6172

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Patches & Fixes for CVE-2026-6172 (1)

Vendor Advisories for CVE-2026-6172 (1)

Same Patch Batch · boldthemes · 2026-09-30 · 5 CVEs total

CVE-2026-6170 6.4 MEDIUM Bold Page Builder <= 5.7.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via
CVE-2026-6171 6.4 MEDIUM Bold Page Builder <= 5.7.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via
CVE-2026-6173 6.4 MEDIUM Bold Page Builder <= 5.7.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via
CVE-2026-88037 6.4 MEDIUM Bold Page Builder <= 5.7.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via

IV. Related Vulnerabilities

Same product: Bold Page Builder
Same vendor: boldthemes
Same weakness: CWE-79

V. Comments for CVE-2026-6172

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