CVE-2026-15291 json
Chat Help – Click to Chat Button & Form <= 3.1.3 - Missing Authorization to Unauthenticated Sensitive Information Exposure
published 3mo ago modified 3mo ago also EUVD-2026-42800
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 51%
- public exploits
- 0
- none known
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.
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 3mo ago
Exploit prediction
0.66% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
Affected products
- themeatelier ChatHelp – Click to Chat Button, WooCommerce Chat to Order & Floating Chat Form
Classification
- Weakness
-
- CWE-862 Missing Authorization
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/91654765-6631-4eb4-9971-32b7db7933e1?source=cve
- plugins.trac.wordpress.org /browser/chat-help/tags/3.1.1/src/Admin/Leads.php#L149
- plugins.trac.wordpress.org /browser/chat-help/tags/3.1.1/src/Admin/Leads.php#L157
- plugins.trac.wordpress.org /browser/chat-help/tags/3.1.1/src/Admin/Leads.php#L234
- plugins.trac.wordpress.org /browser/chat-help/tags/3.1.1/src/Admin/Leads.php#L207
- plugins.trac.wordpress.org /changeset?sfp_email=&sfph_mail=&reponame=&new=3394141%40chat-help%2Ftrunk&old=3390862%40chat-help%2Ftrunk&sfp
Sources
- CVE List CVE-2026-15291
- NVD CVE-2026-15291
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.