CVE Catalog

CVE-2026-15665

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 Fluent Support – Helpdesk & Customer Support Ticket System plugin for WordPress up to version 2.3.0 is vulnerable to Stored Cross-Site Scripting via the 'redirect-to' Shortcode Attribute due to insufficient input sanitization and output escaping. Authenticated attackers with contributor-level access or above can inject arbitrary web scripts, but the XSS payload is in a hidden attribute, so it only fires in specific browsers when specific access keys are used, making exploitation unlikely.

Risk Assessment

Risk is low due to specific conditions required for script execution, but under favorable circumstances it could lead to session hijacking or data theft.

Recommendation

It is recommended to update the Fluent Support plugin to the latest version that fixes this vulnerability.

Related vulnerabilities

Original NVD description (English source)

The Fluent Support – Helpdesk & Customer Support Ticket System plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'redirect-to' Shortcode Attribute in all versions up to, and including, 2.3.0 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 XSS payload is in a hidden attribute so it only fires in specific browsers when specific access keys are used making exploitation unlikely.

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