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CVE-2026-95864— Themify Builder <= 7.8.1 - Unauthenticated Stored Cross-Site Scripting via 'css[fonts]' Parameter

Quick assessment

Affected
themifyme Themify 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 Themify Builder 插件存在存储型跨站脚本（XSS）漏洞，影响范围为 7.8.1 及以下所有版本。该漏洞是由于对 'css[fonts]' 参数的输入清理和输出转义处理不足所致。攻击者可以在页面中注入任意 Web 脚本，当用户访问被注入的页面时，这些脚本将会被执行。 访问该漏洞端点所需的 nonce 值明文嵌入在前端页面的 HTML 标记中，对所有访问者可见。这使得访问控制从真正的身份验证屏障降级为仅依赖于 CSRF 令牌，从而导致未认证的攻击者也能完全利用该漏洞端点。

CVSS 7.2 · High EPSS 0.27% · P18

Affected Version Matrix 1

VendorProduct Version RangeStatus
themifyme Themify Builder ≤ 7.8.1 affected
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I. Basic Information for CVE-2026-95864

Vulnerability Information
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Vulnerability Title
Themify Builder <= 7.8.1 - Unauthenticated Stored Cross-Site Scripting via 'css[fonts]' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The Themify Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'css[fonts]' Parameter in all versions up to, and including, 7.8.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The nonce required to reach the vulnerable endpoint is embedded in plain sight within the front-end page markup for all visitors, reducing the access control to a CSRF token rather than an authentication barrier and making the endpoint fully exploitable by unauthenticated attackers.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/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
themifyme Themify Builder 0 ~ 7.8.1 -

II. Public POCs for CVE-2026-95864

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III. Intelligence Information for CVE-2026-95864

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Patches & Fixes for CVE-2026-95864 (2)

Vendor Advisories for CVE-2026-95864 (1)

Vendor Pages for CVE-2026-95864 (1)

IV. Related Vulnerabilities

Same product: Themify Builder
Same vendor: themifyme
Same weakness: CWE-79

V. Comments for CVE-2026-95864

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