{"id":"CVE-2026-2729","state":"PUBLISHED","title":"Forminator – Contact Form, Payment Form & Custom Form Builder <= 1.52.0 - Missing Authorization to Unauthenticated Stripe PaymentIntent Reuse / Underpayment Bypass via 'paymentid' Parameter","description":"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.","publishedAt":"2026-05-05T06:43:30.131Z","updatedAt":"2026-05-05T14:13:01.575Z","severity":{"score":5.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","source":"Wordfence"},"assigner":"Wordfence","products":["wpmudev Forminator Forms – Contact Form, Payment Form & Custom Form Builder"],"affected":[{"vendor":"wpmudev","product":"Forminator Forms – Contact Form, Payment Form & Custom Form Builder","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"1.52.0","versionType":"semver"}]}],"references":["https://www.wordfence.com/threat-intel/vulnerabilities/id/1afb94ab-b3ba-4598-8ff4-f9ffc6717371?source=cve","https://plugins.trac.wordpress.org/changeset/3500669/forminator"],"weaknesses":["CWE-639"],"ingestedAt":"2026-10-29T20:11:31.369Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/2xxx/CVE-2026-2729.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-2729","state":"PUBLISHED","datePublished":"2026-05-05T06:43:30.131Z","dateUpdated":"2026-05-05T14:13:01.575Z","assignerShortName":"Wordfence","assignerOrgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","dateReserved":"2026-02-19T02:39:56.765Z"},"containers":{"cna":{"title":"Forminator – Contact Form, Payment Form & Custom Form Builder <= 1.52.0 - Missing Authorization to Unauthenticated Stripe PaymentIntent Reuse / Underpayment Bypass via 'paymentid' Parameter","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."}],"affected":[{"vendor":"wpmudev","product":"Forminator Forms – Contact Form, Payment Form & Custom Form Builder","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"1.52.0","versionType":"semver"}]}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/1afb94ab-b3ba-4598-8ff4-f9ffc6717371?source=cve"},{"url":"https://plugins.trac.wordpress.org/changeset/3500669/forminator"}],"metrics":[{"cvssV3_1":{"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-639","lang":"en","description":"CWE-639 Authorization Bypass Through User-Controlled Key","type":"CWE"}]}],"providerMetadata":{"shortName":"Wordfence","orgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","dateUpdated":"2026-05-05T06:43:30.131Z"},"credits":[{"lang":"en","type":"finder","value":"Kittipat Jitphonchana"}],"timeline":[{"time":"2026-02-19T03:05:04.000Z","lang":"en","value":"Vendor Notified"},{"time":"2026-05-04T17:34:23.000Z","lang":"en","value":"Disclosed"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-05T13:47:51.498332Z","id":"CVE-2026-2729","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-05T14:13:01.575Z"}}]}}}