The7 <= 14.3.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode 'link' Parameter
Strategic Overview
- Status
- Patched in 14.3.3
- Affected Theme
- The7 — Website and eCommerce Builder for WordPress
- Affected Version
<= 14.3.2- CVSS
- 6.4Medium
- Weakness type
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CVE
CVE-2026-6646
At a glance
CVE-2026-6646 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the The7 WordPress theme, affecting versions <= 14.3.2. It carries a CVSS score of 6.4 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Contributor level or above. The issue is fixed in version 14.3.3; sites on affected versions should update now. Disclosed May 2026, reported by João Pedro Soares de Alcântara.
Vulnerability Overview
The The7 theme for WordPress is vulnerable to Stored Cross-Site Scripting via the 'dt_default_button' shortcode in all versions up to, and including, 14.3.2. This is due to insufficient input sanitization and output escaping on the 'title' component of the 'link' shortcode parameter. 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.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user.
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
The7 <= 14.3.2 carries this weakness at dt_default_button, and reaching it takes an account at Contributor level or above. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.
Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For The7 the fix is 14.3.3: builds <= 14.3.2 are affected, anything from 14.3.3 onward is not.
Remediation
Update to version 14.3.3, or a newer patched version
How does WordSec protect against this?
An attacker needs Contributor access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: The7 14.3.3 closes this, and updating the theme is the step that ends it.
- Firewall
- Alerts
External References
Related records
Same weakness class
Other vulnerabilities in The7 — Website and eCommerce Builder for WordPress
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