Is CVE-2026-15759 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-15759 being exploited in the wild.

How severe is CVE-2026-15759?

Medium severity, with a CVSS score of 6.4, published 17 July 2026.

Which products and versions are affected?

Themeatelier ChatHelp – Click to Chat Button, WooCommerce Chat to Order & Floating Chat Form up to, and including, 3.5.1.

Is there a fix for CVE-2026-15759?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-15759 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-15759?

Check whether you run Themeatelier ChatHelp – Click to Chat Button or WooCommerce Chat to Order & Floating Chat Form at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-15759: themeatelier ChatHelp Stored XSS in Shortcode Attributes

CVE-2026-15759 · Severity: medium · CVSS 6.4 · Published 2026-07-17

The ChatHelp plugin for WordPress, which adds chat buttons and WooCommerce order features to websites, contains a security flaw. An attacker with basic contributor-level access can inject malicious scripts into website pages. These scripts will automatically run in the browser of any visitor who views the affected page, potentially leading to unauthorized actions or data theft.

Vendors: Themeatelier.

Quick answers

Is CVE-2026-15759 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-15759 being exploited in the wild.
How severe is CVE-2026-15759?: Medium severity, with a CVSS score of 6.4, published 17 July 2026.
Which products and versions are affected?: Themeatelier ChatHelp – Click to Chat Button, WooCommerce Chat to Order & Floating Chat Form up to, and including, 3.5.1.
Is there a fix for CVE-2026-15759?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-15759 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-15759?: Check whether you run Themeatelier ChatHelp – Click to Chat Button or WooCommerce Chat to Order & Floating Chat Form at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The ChatHelp WordPress plugin is vulnerable to Stored Cross-Site Scripting (XSS) due to insufficient input sanitization and output escaping on the 'number' and 'group' shortcode attributes. This vulnerability exists in versions up to and including 3.5.1. An authenticated attacker with contributor-level permissions or higher can exploit this by embedding malicious web scripts into a page via shortcodes. These scripts are then stored and executed in the context of any user's browser who visits the compromised page. The issue is tracked as CWE-79 and has been addressed in subsequent updates.

Affected products

themeatelier ChatHelp – Click to Chat Button, WooCommerce Chat to Order & Floating Chat Form up to, and including, 3.5.1

Timeline

2026-07-17: advisory: NVD publication date
2026-07-17: disclosed: Wordfence advisory published

References

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