CVE-2026-18404

Social Chat <= 8.6.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'consent_message' JSON Attribute in .qlwapp data-box

Published Sep 5, 2026 CVSS 3.1 · 6.4 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Quadlayers
Quadlayers social Chat – Click To Chat App Button
Wordpress
Wordpress wordpress
Vendors & Products Quadlayers
Quadlayers social Chat – Click To Chat App Button
Wordpress
Wordpress wordpress
Type Values Removed Values Added
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.
Title Social Chat <= 8.6.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'consent_message' JSON Attribute in .qlwapp data-box
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Wordfence
Published
Updated
Sep 7, 2026, 11:17 AM
Reserved
Jul 30, 2026, 3:54 PM
Status
Deferred
Published
Sep 5, 2026, 6:17 AM
Modified
Sep 8, 2026, 1:12 PM