CVE-2026-18404

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

MEDIUM
6.4
CVSS Score
Published: September 5, 2026 at 05:30 AM UTC
Updated: September 8, 2026 at 01:31 PM UTC
1 product affected across 1 vendorWp Social Chat

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Severity
MEDIUM6.4
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

60%
v ≤ 8.6.2

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.4MEDIUMWordfence
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-79

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