{"id":"CVE-2026-1782","aliases":["EUVD-2026-22851","GHSA-q72v-prr3-m2r8"],"status":"published","title":"MetForm Pro \u003c= 3.9.7 - Unauthenticated Payment Amount Manipulation via 'mf-calculation'","description":"The MetForm Pro plugin for WordPress is vulnerable to Improper Input Validation  in all versions up to, and including, 3.9.7 This is due to the payment integrations (Stripe/PayPal) trusting a user-submitted calculation field value without recomputing or validating it against the configured form price. This makes it possible for unauthenticated attackers to manipulate the payment amount via the 'mf-calculation' field in the form submission REST request granted there exists a specific form with this particular configuration.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00266,"percentile":0.18935,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2026-04-15T08:28:16Z","modified":"2026-06-17T10:16:30Z","products":[{"vendor":"wpmet","product":"metform pro"}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/a49dd64b-6ae8-49ed-9e8a-e5b73c2acf4b?source=cve"},{"url":"https://wpmet.com/plugin/metform/"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-1782"},{"url":"https://wpmet.com/plugin/metform"},{"url":"https://github.com/advisories/GHSA-q72v-prr3-m2r8"}],"sources":{"cve":[{"id":"CVE-2026-1782","title":"MetForm Pro \u003c= 3.9.7 - Unauthenticated Payment Amount Manipulation via 'mf-calculation'","description":"The MetForm Pro plugin for WordPress is vulnerable to Improper Input Validation  in all versions up to, and including, 3.9.7 This is due to the payment integrations (Stripe/PayPal) trusting a user-submitted calculation field value without recomputing or validating it against the configured form price. This makes it possible for unauthenticated attackers to manipulate the payment amount via the 'mf-calculation' field in the form submission REST request granted there exists a specific form with this particular configuration.","status":"published","published":"2026-04-15T08:28:16.406Z","modified":"2026-04-15T18:07:59.02Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:20:00.879257Z"}],"euvd":[{"id":"EUVD-2026-22851","description":"The MetForm Pro plugin for WordPress is vulnerable to Improper Input Validation  in all versions up to, and including, 3.9.7 This is due to the payment integrations (Stripe/PayPal) trusting a user-submitted calculation field value without recomputing or validating it against the configured form price. This makes it possible for unauthenticated attackers to manipulate the payment amount via the 'mf-calculation' field in the form submission REST request granted there exists a specific form with this particular configuration.","status":"published","published":"2026-04-15T08:28:16Z","modified":"2026-04-15T18:07:59Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T19:24:25.212217Z"}],"ghsa":[{"id":"GHSA-q72v-prr3-m2r8","title":"The MetForm Pro plugin for WordPress is vulnerable to Improper Input Validation  in all versions...","description":"The MetForm Pro plugin for WordPress is vulnerable to Improper Input Validation  in all versions up to, and including, 3.9.7 This is due to the payment integrations (Stripe/PayPal) trusting a user-submitted calculation field value without recomputing or validating it against the configured form price. This makes it possible for unauthenticated attackers to manipulate the payment amount via the 'mf-calculation' field in the form submission REST request granted there exists a specific form with this particular configuration.","status":"published","published":"2026-04-22T21:31:43Z","modified":"2026-04-22T21:31:55Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T15:07:35.737909Z"}],"nvd":[{"id":"CVE-2026-1782","description":"The MetForm Pro plugin for WordPress is vulnerable to Improper Input Validation  in all versions up to, and including, 3.9.7 This is due to the payment integrations (Stripe/PayPal) trusting a user-submitted calculation field value without recomputing or validating it against the configured form price. This makes it possible for unauthenticated attackers to manipulate the payment amount via the 'mf-calculation' field in the form submission REST request granted there exists a specific form with this particular configuration.","status":"published","published":"2026-04-15T09:16:31.213Z","modified":"2026-06-17T10:16:30.707Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:12:14.748836Z"}]}}