CVE-2026-3481

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-3481", "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "state": "PUBLISHED", "assignerShortName": "Wordfence", "dateReserved": "2026-03-03T14:45:44.658Z", "datePublished": "2026-05-22T04:29:01.158Z", "dateUpdated": "2026-05-22T12:36:08.560Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "shortName": "Wordfence", "dateUpdated": "2026-05-22T04:29:01.158Z"}, "affected": [{"vendor": "burlingtonbytes", "product": "WP Blockade \u2013 Visual Page Builder", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "0.9.14", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "The WP Blockade plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'shortcode' parameter in all versions up to and including 0.9.14. This is due to insufficient input sanitization and output escaping in the render_shortcode_preview() function. The function receives user input from $_GET['shortcode'], passes it through stripslashes() without any sanitization, and then outputs it directly via echo do_shortcode($shortcode) on line 393. When the input is not a valid WordPress shortcode (e.g., an HTML tag with JavaScript event handlers), do_shortcode() returns it unchanged, and it is reflected into the page without escaping. The endpoint is registered via admin_post_ (not admin_post_nopriv_), meaning it requires the user to be logged in with at minimum a Subscriber-level account. There is no nonce verification or additional capability check. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject arbitrary web scripts in pages that will execute if they can successfully trick a user into performing an action such as clicking a link."}], "title": "WP Blockade <= 0.9.14 - Reflected Cross-Site Scripting via 'shortcode' Parameter", "references": [{"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/66950509-ce2a-42fe-a8b2-2a92a1b573c3?source=cve"}, {"url": "https://plugins.trac.wordpress.org/browser/wp-blockade/trunk/wp-blockade.php#L393"}, {"url": "https://plugins.trac.wordpress.org/browser/wp-blockade/tags/0.9.14/wp-blockade.php#L393"}, {"url": "https://plugins.trac.wordpress.org/browser/wp-blockade/trunk/wp-blockade.php#L360"}, {"url": "https://plugins.trac.wordpress.org/browser/wp-blockade/tags/0.9.14/wp-blockade.php#L360"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "cweId": "CWE-79", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "baseScore": 6.1, "baseSeverity": "MEDIUM"}}], "credits": [{"lang": "en", "type": "finder", "value": "Youcef Hamdani"}], "timeline": [{"time": "2026-05-21T16:12:17.000Z", "lang": "en", "value": "Disclosed"}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-05-22T12:35:59.570293Z", "id": "CVE-2026-3481", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-22T12:36:08.560Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-3481", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-22T12:35:59.570293Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-22T12:36:04.926Z"}}], "cna": {"title": "WP Blockade <= 0.9.14 - Reflected Cross-Site Scripting via 'shortcode' Parameter", "credits": [{"lang": "en", "type": "finder", "value": "Youcef Hamdani"}], "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 6.1, "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"}}], "affected": [{"vendor": "burlingtonbytes", "product": "WP Blockade \u2013 Visual Page Builder", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "0.9.14"}], "defaultStatus": "unaffected"}], "timeline": [{"lang": "en", "time": "2026-05-21T16:12:17.000Z", "value": "Disclosed"}], "references": [{"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/66950509-ce2a-42fe-a8b2-2a92a1b573c3?source=cve"}, {"url": "https://plugins.trac.wordpress.org/browser/wp-blockade/trunk/wp-blockade.php#L393"}, {"url": "https://plugins.trac.wordpress.org/browser/wp-blockade/tags/0.9.14/wp-blockade.php#L393"}, {"url": "https://plugins.trac.wordpress.org/browser/wp-blockade/trunk/wp-blockade.php#L360"}, {"url": "https://plugins.trac.wordpress.org/browser/wp-blockade/tags/0.9.14/wp-blockade.php#L360"}], "descriptions": [{"lang": "en", "value": "The WP Blockade plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'shortcode' parameter in all versions up to and including 0.9.14. This is due to insufficient input sanitization and output escaping in the render_shortcode_preview() function. The function receives user input from $_GET['shortcode'], passes it through stripslashes() without any sanitization, and then outputs it directly via echo do_shortcode($shortcode) on line 393. When the input is not a valid WordPress shortcode (e.g., an HTML tag with JavaScript event handlers), do_shortcode() returns it unchanged, and it is reflected into the page without escaping. The endpoint is registered via admin_post_ (not admin_post_nopriv_), meaning it requires the user to be logged in with at minimum a Subscriber-level account. There is no nonce verification or additional capability check. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject arbitrary web scripts in pages that will execute if they can successfully trick a user into performing an action such as clicking a link."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-79", "description": "CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')"}]}], "providerMetadata": {"orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "shortName": "Wordfence", "dateUpdated": "2026-05-22T04:29:01.158Z"}}}, "cveMetadata": {"cveId": "CVE-2026-3481", "state": "PUBLISHED", "dateUpdated": "2026-05-22T12:36:08.560Z", "dateReserved": "2026-03-03T14:45:44.658Z", "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "datePublished": "2026-05-22T04:29:01.158Z", "assignerShortName": "Wordfence"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "WP Blockade \u2013 Visual Page Builder", "vendor": "burlingtonbytes", "versions": [{"lessThanOrEqual": "0.9.14", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "security@wordfence.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The WP Blockade plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'shortcode' parameter in all versions up to and including 0.9.14. This is due to insufficient input sanitization and output escaping in the render_shortcode_preview() function. The function receives user input from $_GET['shortcode'], passes it through stripslashes() without any sanitization, and then outputs it directly via echo do_shortcode($shortcode) on line 393. When the input is not a valid WordPress shortcode (e.g., an HTML tag with JavaScript event handlers), do_shortcode() returns it unchanged, and it is reflected into the page without escaping. The endpoint is registered via admin_post_ (not admin_post_nopriv_), meaning it requires the user to be logged in with at minimum a Subscriber-level account. There is no nonce verification or additional capability check. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject arbitrary web scripts in pages that will execute if they can successfully trick a user into performing an action such as clicking a link."}, {"lang": "es", "value": "El plugin WP Blockade para WordPress es vulnerable a cross-site scripting reflejado a trav\u00e9s del par\u00e1metro 'shortcode' en todas las versiones hasta la 0.9.14 inclusive. Esto se debe a una sanitizaci\u00f3n de entrada y un escape de salida insuficientes en la funci\u00f3n render_shortcode_preview(). La funci\u00f3n recibe entrada de usuario de $_GET['shortcode'], la pasa a trav\u00e9s de stripslashes() sin ninguna sanitizaci\u00f3n, y luego la imprime directamente a trav\u00e9s de echo do_shortcode($shortcode) en la l\u00ednea 393. Cuando la entrada no es un shortcode de WordPress v\u00e1lido (por ejemplo, una etiqueta HTML con manejadores de eventos JavaScript), do_shortcode() la devuelve sin cambios, y se refleja en la p\u00e1gina sin escape. El endpoint se registra a trav\u00e9s de admin_post_ (no admin_post_nopriv_), lo que significa que requiere que el usuario est\u00e9 autenticado con al menos una cuenta de nivel Suscriptor. No hay verificaci\u00f3n de nonce ni comprobaci\u00f3n de capacidad adicional. Esto hace posible que atacantes autenticados, con acceso de nivel Suscriptor o superior, inyecten scripts web arbitrarios en p\u00e1ginas que se ejecutar\u00e1n si logran enga\u00f1ar a un usuario para que realice una acci\u00f3n como hacer clic en un enlace."}], "id": "CVE-2026-3481", "lastModified": "2026-07-23T16:10:00.137", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.7, "source": "security@wordfence.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-3481", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-05-22T12:35:59.570293Z", "version": "2.0.3"}}]}, "published": "2026-05-22T05:16:25.640", "references": [{"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/wp-blockade/tags/0.9.14/wp-blockade.php#L360"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/wp-blockade/tags/0.9.14/wp-blockade.php#L393"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/wp-blockade/trunk/wp-blockade.php#L360"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/wp-blockade/trunk/wp-blockade.php#L393"}, {"source": "security@wordfence.com", "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/66950509-ce2a-42fe-a8b2-2a92a1b573c3?source=cve"}], "sourceIdentifier": "security@wordfence.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "security@wordfence.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,0.9.14]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "WP Blockade \u2013 Visual Page Builder", "source": "cna", "vendor": "burlingtonbytes"}, "product": "wp_blockade_\u2013_visual_page_builder", "vendor": "burlingtonbytes"}, {"configurations": [{"platform": null, "status": "unaffected", "versions": null}], "enrichment": {"confidence": 80.0, "confidence_source": "inferred", "scores": [{"score": 80.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "product": "wordpress", "vendor": "wordpress"}], "created": "2026-05-22T06:30:28.779518+00:00", "updated": "2026-05-22T06:30:29.021554+00:00", "vendors": ["burlingtonbytes", "burlingtonbytes$PRODUCT$wp_blockade_\u2013_visual_page_builder", "wordpress", "wordpress$PRODUCT$wordpress"]}