Missing authorization in ThemeAtelier ChatHelp – Click to Chat Button, WooCommerce Chat…
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-862.
Summary
The Chat Help – Click to Chat Button & Form plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 3.1.3 via the REST API endpoints /wp-json/chat-help/v1/leads and /wp-json/chat-help/v1/leads/{id}. This is due to the plugin not performing any authentication and authorization checks. This makes it possible for unauthenticated attackers to extract sensitive data including customer names, email addresses, phone numbers, WhatsApp messages, complete geolocation data (IP addresses, city, country, ISP, coordinates), device fingerprinting information (browser, OS, screen resolution), and WordPress account credentials (user IDs, usernames, emails, names) for logged-in users who submit forms.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- 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 |
|---|---|---|---|---|---|
| ThemeAtelier | ChatHelp – Click to Chat Button, WooCommerce Chat to Order & Floating Chat Form | up to 3.1.3 | — | No fix listed | CNA |
- ChatHelp – Click to Chat Button, WooCommerce Chat to Order & Floating Chat Form VendorThemeAtelier Affected up to 3.1.3 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-15291
- 2026-10-03 Alias added: GHSA-9xxg-hrhj-4868
- 2026-10-08 EPSS moved to the 50th–90th percentile
References
Other 6
- https://www.wordfence.com/threat-intel/vulnerabilities/id/91654765-6631-4eb4-9971-32b7db7933e1?source=cve
- https://plugins.trac.wordpress.org/browser/chat-help/tags/3.1.1/src/Admin/Leads.php#L149
- https://plugins.trac.wordpress.org/browser/chat-help/tags/3.1.1/src/Admin/Leads.php#L157
- https://plugins.trac.wordpress.org/browser/chat-help/tags/3.1.1/src/Admin/Leads.php#L234
- https://plugins.trac.wordpress.org/browser/chat-help/tags/3.1.1/src/Admin/Leads.php#L207
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3394141%40chat-help%2Ftrunk&old=3390862%40chat-help%2Ftrunk&sfp_email=&sfph_mail=
More ThemeAtelier vulnerabilities
- TI-2025-10220 IDonate < 2.1.13 - Unauthenticated User Deletion CVSS 3.1MEDIUM 5.4
- TI-2025-23584 WordPress IDonate plugin <= 2.1.18 - Local File Inclusion vulnerability CVSS 3.1CRITICAL 9.8
- TI-2026-60333 ThemeAtelier Domain For Sale < 3.5.2 Missing Authorization via REST API CVSS 4.0HIGH 8.8
- TI-2025-04036 Improper authorization in ThemeAtelier IDonate – Blood Donation, Request And Donor… CVSS 3.1HIGH 8.8
- TI-2025-04034 Improper authorization in ThemeAtelier IDonate – Blood Donation, Request And Donor… CVSS 3.1HIGH 8.8
- TI-2025-37411 WordPress IDonatePro plugin <= 2.1.11 - Broken Access Control vulnerability CVSS 3.1HIGH 7.5
Sources
- CVE-2026-15291 · CVE Program
- CVE-2026-15291 · NVD
- FIRST EPSS
- GHSA-9xxg-hrhj-4868 · 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