CVE-2026-18404— Social Chat <= 8.6.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'consent_message' JSON Attribute in .qlwapp data-box
Quick assessment
Affected
quadlayers Social Chat – Click To Chat App Button
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“The Social Chat – Click To Chat App Button”在所有版本（包括 8.6.2 及之前版本）中，由于输入验证和输出转义不足，其 数据框中的 JSON 属性存在存储型跨站脚本（Stored Cross-Site Scripting）漏洞。 这意味着，拥有贡献者（contributor）及以上权限的已认证攻击者，可以通过在页面的数据框中注入任意 Web 脚本，当用户访问该页面时脚本将被执行。利用此漏洞无需用户额外交互：只需在注入的数据框 JSON 中将 和
Possible ATT&CK Techniques 1 AI
T1200 · Hardware Additions
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I. Basic Information for CVE-2026-18404
Vulnerability Information
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Vulnerability Title
Social Chat <= 8.6.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'consent_message' JSON Attribute in .qlwapp data-box
Source: CVE Program / CVE List V5
Vulnerability Description
The Social Chat – Click To Chat App Button plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'consent_message' JSON Attribute in .qlwapp data-box in all versions up to, and including, 8.6.2 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 exploit requires no user interaction beyond page load, as setting auto_open and consent_enabled to 'yes' in the injected data-box JSON causes the consent box — and the embedded script — to execute immediately on page load.
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 |
|---|---|---|---|---|
| quadlayers | Social Chat – Click To Chat App Button | 0 ~ 8.6.2 | - |
|
II. Public POCs for CVE-2026-18404
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2026-18404 (7)
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V. Comments for CVE-2026-18404
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