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CVE-2026-17586— VK All in One Expansion Unit <= 9.118.0 - Authenticated (Author+) Stored Cross-Site Scripting via 'vkExUnit_cta_img_position' Post Meta

Quick assessment

Affected
kurudrive VK All in One Expansion Unit
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 插件“VK All in One Expansion Unit”在 9.118.0 及之前版本中，由于输入数据清理和输出转义不足，通过 Post Meta 字段 存在存储型跨站脚本（Stored XSS）漏洞。这使得拥有贡献者（contributor）及以上权限的认证攻击者能够向页面注入任意 Web 脚本，当用户访问被注入的页面时，这些脚本将会执行。具体而言，保存时应用的 回调无法过滤双引号字符或 事件处理属性；同时，输出过滤器 仅重写不允许的 元素，而其他内容原样返回，导致注入的攻击载荷在渲染

CVSS 6.4 · Medium EPSS 0.31% · P21

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise

Affected Version Matrix 1

VendorProduct Version RangeStatus
kurudrive VK All in One Expansion Unit ≤ 9.118.0 affected
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I. Basic Information for CVE-2026-17586

Vulnerability Information
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Vulnerability Title
VK All in One Expansion Unit <= 9.118.0 - Authenticated (Author+) Stored Cross-Site Scripting via 'vkExUnit_cta_img_position' Post Meta
Source: CVE Program / CVE List V5
Vulnerability Description
The VK All in One Expansion Unit plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'vkExUnit_cta_img_position' Post Meta in all versions up to, and including, 9.118.0 due to insufficient input sanitization and output escaping. 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. The sanitize_text_field callback applied on save does not strip double-quote characters or on* event-handler attributes, and the output filter Vk_Call_To_Action::safe_kses_post() only rewrites disallowed iframe elements while returning all other content verbatim, leaving the injected payload intact in the rendered HTML.
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
kurudrive VK All in One Expansion Unit 0 ~ 9.118.0 -

II. Public POCs for CVE-2026-17586

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III. Intelligence Information for CVE-2026-17586

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Other References for CVE-2026-17586 (7)

IV. Related Vulnerabilities

Same product: VK All in One Expansion Unit
Same vendor: kurudrive
Same weakness: CWE-79

V. Comments for CVE-2026-17586

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