{"id":"CVE-2026-16038","state":"PUBLISHED","title":"MStore API < 4.21.0 - Unauthenticated Payment Bypass via Multiple Payment Gateways","description":"The MStore API  WordPress plugin before 4.21.0 does not verify the payment with the payment gateway before marking an order as paid on several of its payment-completion endpoints, allowing an unauthenticated attacker to mark an arbitrary order fully paid without paying and obtain goods or services for free.","publishedAt":"2026-08-07T06:00:13.250Z","updatedAt":"2026-08-07T18:06:42.205Z","severity":{"score":9.1,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","source":"CISA-ADP"},"assigner":"WPScan","products":["Unknown MStore API"],"affected":[{"vendor":"Unknown","product":"MStore API","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"4.21.0","versionType":"semver"}]}],"references":["https://wpscan.com/vulnerability/6321d247-39c7-43a6-a528-202e1118a5d5/"],"weaknesses":["CWE-862"],"ingestedAt":"2026-10-29T20:11:00.674Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/16xxx/CVE-2026-16038.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-16038","state":"PUBLISHED","datePublished":"2026-08-07T06:00:13.250Z","dateUpdated":"2026-08-07T18:06:42.205Z","assignerShortName":"WPScan","assignerOrgId":"1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81","dateReserved":"2026-07-17T09:20:54.757Z"},"containers":{"cna":{"title":"MStore API < 4.21.0 - Unauthenticated Payment Bypass via Multiple Payment Gateways","descriptions":[{"lang":"en","value":"The MStore API  WordPress plugin before 4.21.0 does not verify the payment with the payment gateway before marking an order as paid on several of its payment-completion endpoints, allowing an unauthenticated attacker to mark an arbitrary order fully paid without paying and obtain goods or services for free."}],"affected":[{"vendor":"Unknown","product":"MStore API","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"4.21.0","versionType":"semver"}]}],"references":[{"url":"https://wpscan.com/vulnerability/6321d247-39c7-43a6-a528-202e1118a5d5/","tags":["exploit","vdb-entry","technical-description"]}],"problemTypes":[{"descriptions":[{"description":"CWE-862 Missing Authorization","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"WPScan","orgId":"1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81","dateUpdated":"2026-08-07T06:00:13.250Z"},"credits":[{"lang":"en","value":"Sai Praneeth Koti","type":"finder"},{"lang":"en","value":"WPScan","type":"coordinator"}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"WPScan CVE Generator"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":9.1,"attackVector":"NETWORK","baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-08-07T18:06:16.466932Z","id":"CVE-2026-16038","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-862","type":"CWE","lang":"en","description":"CWE-862 Missing Authorization"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-07T18:06:42.205Z"}}]}}}