CVE Catalog

CVE-2026-15759

MediumCVSS 6.4
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.20%

10th percentile - higher than 10% of all known CVEs

Summary

The ChatHelp plugin for WordPress up to version 3.5.1 is vulnerable to Stored Cross-Site Scripting via 'number' and 'group' shortcode attributes due to insufficient input sanitization and output escaping. Authenticated attackers with contributor-level access or higher can inject arbitrary web scripts that execute when users visit affected pages.

Risk Assessment

An attacker can inject malicious JavaScript that executes on every visit to an infected page, potentially leading to session hijacking, redirection to malicious sites, or data theft.

Recommendation

Immediately update the ChatHelp plugin to the latest available version that fixes this vulnerability. If no update is available, temporarily disable the plugin.

Related vulnerabilities

Original NVD description (English source)

The ChatHelp – Click to Chat Button, WooCommerce Chat to Order & Floating Chat Form plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'number' and 'group' Shortcode Attributes in all versions up to, and including, 3.5.1 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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS