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CVE-2026-115869— Themify Builder <= 7.8.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'variations' Repeater Field

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 插件在 7.8.4 及更早版本中存在存储型跨站脚本（Stored XSS）漏洞。该漏洞源于对"Custom Font（tb_cf）”文章类型中"variations"重复字段（repeater field）的输入过滤和输出转义不足。具体而言， 方法仅在字段类型为"textbox"或"textarea"时，才会通过 对值进行过滤；而对于"repeater"字段，攻击者可控的子字段内容（包括样式代码、以及 woff/woff2/ttf/svg/eot 字体的 UR

CVSS 6.4 · Medium

Affected Version Matrix 1

VendorProduct Version RangeStatus
themifyme Themify Builder ≤ 7.8.4 affected
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I. Basic Information for CVE-2026-115869

Vulnerability Information
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Vulnerability Title
Themify Builder <= 7.8.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'variations' Repeater Field
Source: CVE Program / CVE List V5
Vulnerability Description
The Themify Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'variations' repeater field of Custom Font (tb_cf) posts in versions up to, and including, 7.8.4. This is due to insufficient input sanitization and output escaping on the variations post meta: Themify_Metabox::_save_meta() only passes the value through wp_kses_data() when the field type is 'textbox' or 'textarea', so the 'repeater' field writes attacker-controlled sub-fields (style, woff/woff2/ttf/svg/eot URLs) to update_post_meta() verbatim, and Themify_Custom_Fonts::render_columns() later echoes those values unescaped inside a <style> block on the Custom Fonts admin listing. 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 (specifically, the Custom Fonts admin listing).
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
themifyme Themify Builder 0 ~ 7.8.4 -

II. Public POCs for CVE-2026-115869

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III. Intelligence Information for CVE-2026-115869

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Other References for CVE-2026-115869 (5)

IV. Related Vulnerabilities

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