{"id":"CVE-2026-1782","state":"PUBLISHED","title":"MetForm Pro <= 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.","publishedAt":"2026-04-15T08:28:16.406Z","updatedAt":"2026-04-15T18:07:59.020Z","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":["Wpmet MetForm Pro"],"affected":[{"vendor":"Wpmet","product":"MetForm Pro","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"3.9.7","versionType":"semver"}]}],"references":["https://www.wordfence.com/threat-intel/vulnerabilities/id/a49dd64b-6ae8-49ed-9e8a-e5b73c2acf4b?source=cve","https://wpmet.com/plugin/metform/"],"weaknesses":["CWE-20"],"ingestedAt":"2026-10-29T20:11:10.572Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/1xxx/CVE-2026-1782.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-1782","state":"PUBLISHED","datePublished":"2026-04-15T08:28:16.406Z","dateUpdated":"2026-04-15T18:07:59.020Z","assignerShortName":"Wordfence","assignerOrgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","dateReserved":"2026-02-02T21:00:18.963Z"},"containers":{"cna":{"title":"MetForm Pro <= 3.9.7 - Unauthenticated Payment Amount Manipulation via 'mf-calculation'","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Wpmet","product":"MetForm Pro","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"3.9.7","versionType":"semver"}]}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/a49dd64b-6ae8-49ed-9e8a-e5b73c2acf4b?source=cve"},{"url":"https://wpmet.com/plugin/metform/"}],"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-20","lang":"en","description":"CWE-20 Improper Input Validation","type":"CWE"}]}],"providerMetadata":{"shortName":"Wordfence","orgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","dateUpdated":"2026-04-15T08:28:16.406Z"},"credits":[{"lang":"en","type":"finder","value":"andrea bocchetti"}],"timeline":[{"time":"2026-02-12T20:11:36.000Z","lang":"en","value":"Vendor Notified"},{"time":"2026-04-14T19:59:33.000Z","lang":"en","value":"Disclosed"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-15T18:07:49.078963Z","id":"CVE-2026-1782","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":"2026-04-15T18:07:59.020Z"}}]}}}