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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 Social Chat是WordPress基金会的一款集成社交聊天功能的CMS插件。 WordPress Social Chat 8.6.2及之前版本存在跨站脚本漏洞，该漏洞源于对consent_message JSON属性的输入清理和输出转义不足，可能造成存储型跨站脚本攻击，具有贡献者级别及以上权限的认证攻击者可注入任意Web脚本。

CVSS 6.4 · Medium EPSS 0.20% · P9

Possible ATT&CK Techniques 1 AI

T1200 · Hardware Additions

Affected Version Matrix 1

VendorProduct Version RangeStatus
quadlayers Social Chat – Click To Chat App Button ≤ 8.6.2 affected
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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
Vulnerability Title
WordPress Social Chat 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Social Chat是WordPress基金会的一款集成社交聊天功能的CMS插件。 WordPress Social Chat 8.6.2及之前版本存在跨站脚本漏洞，该漏洞源于对consent_message JSON属性的输入清理和输出转义不足，可能造成存储型跨站脚本攻击，具有贡献者级别及以上权限的认证攻击者可注入任意Web脚本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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

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III. Intelligence Information for CVE-2026-18404

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Patches & Fixes for CVE-2026-18404 (2)

Vendor Advisories for CVE-2026-18404 (1)

Vendor Pages for CVE-2026-18404 (2)

Other References for CVE-2026-18404 (2)

IV. Related Vulnerabilities

Same vendor: quadlayers
Same weakness: CWE-79

V. Comments for CVE-2026-18404

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