Cross-site scripting in quadlayers Social Chat – Click To Chat App Button
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| quadlayers | Social Chat – Click To Chat App Button | up to 8.6.2 | — | No fix listed | CNA |
- Social Chat – Click To Chat App Button Vendorquadlayers Affected up to 8.6.2 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-18404
- 2026-10-03 Alias added: GHSA-3j54-vf3c-f8mg
References
Other 7
- https://www.wordfence.com/threat-intel/vulnerabilities/id/f159392b-5bc6-4c12-a924-13ea170bb7fa?source=cve
- https://plugins.trac.wordpress.org/browser/wp-whatsapp-chat/tags/8.6.1/build/frontend/js/index.js#L2
- https://plugins.trac.wordpress.org/browser/wp-whatsapp-chat/tags/8.6.1/lib/controllers/class-frontend.php#L86
- https://plugins.trac.wordpress.org/browser/wp-whatsapp-chat/tags/8.5.1/build/frontend/js/index.js#L2
- https://plugins.trac.wordpress.org/browser/wp-whatsapp-chat/tags/8.5.1/lib/controllers/class-frontend.php#L86
- https://plugins.trac.wordpress.org/changeset?reponame=&new=3667778%40wp-whatsapp-chat%2Ftags%2F8.6.3&old=3664149%40wp-whatsapp-chat%2Ftags%2F8.6.2
- https://plugins.trac.wordpress.org/changeset?old_path=%2Fwp-whatsapp-chat/tags/8.6.2&new_path=%2Fwp-whatsapp-chat/tags/8.6.3
More quadlayers vulnerabilities
- TI-2021-03299 WordPress Mega Menu <= 2.0.6 - Arbitrary File Creation CVSS 3.1CRITICAL 9.8
- TI-2023-25819 WordPress WooCommerce Checkout Manager plugin <= 7.3.0 - Broken Access Control vulnerability CVSS 3.1MEDIUM 6.5
- TI-2019-11850 The insta-gallery plugin before 2.4.8 for WordPress has no nonce validation for… CVSS 3.0HIGH 8.8
- TI-2025-36354 WordPress Perfect Brands for WooCommerce plugin <= 3.6.2 - SQL Injection vulnerability CVSS 3.1HIGH 8.5
- TI-2026-74596 WooCommerce Checkout Field Manager: Missing Authorization Allows Media Deletion CVSS 3.1HIGH 8.1
- TI-2024-26564 WordPress Social Feed Gallery plugin <= 4.3.9 - Broken Access Control vulnerability CVSS 3.1MEDIUM 6.5
Sources
- CVE-2026-18404 · CVE Program
- CVE-2026-18404 · NVD
- FIRST EPSS
- GHSA-3j54-vf3c-f8mg · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences