{"id":"CVE-2021-20835","state":"PUBLISHED","title":"Improper authorization in handler for custom URL scheme vulnerability in Android App 'Mercari (Merpay) - Marketplace and Mobile Payments App' (Japan version) versions prior to 4.49","description":"Improper authorization in handler for custom URL scheme vulnerability in Android App 'Mercari (Merpay) - Marketplace and Mobile Payments App' (Japan version) versions prior to 4.49.1 allows a remote attacker to lead a user to access an arbitrary website and the website launches an arbitrary Activity of the app via the vulnerable App, which may result in Mercari account's access token being obtained.","publishedAt":"2021-11-24T08:25:38.000Z","updatedAt":"2024-08-03T17:53:23.012Z","severity":null,"assigner":"jpcert","products":["Mercari, Inc. Android App 'Mercari (Merpay) - Marketplace and Mobile Payments App' (Japan version)"],"affected":[{"vendor":"Mercari, Inc.","product":"Android App 'Mercari (Merpay) - Marketplace and Mobile Payments App' (Japan version)","versions":[{"version":"versions prior to 4.49.1","status":"affected"}]}],"references":["https://jvn.jp/en/jp/JVN49465877/index.html"],"weaknesses":[],"ingestedAt":"2026-10-29T19:47:55.610Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/20xxx/CVE-2021-20835.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-20835","state":"PUBLISHED","datePublished":"2021-11-24T08:25:38.000Z","dateUpdated":"2024-08-03T17:53:23.012Z","assignerShortName":"jpcert","assignerOrgId":"ede6fdc4-6654-4307-a26d-3331c018e2ce","dateReserved":"2020-12-17T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"Improper authorization in handler for custom URL scheme vulnerability in Android App 'Mercari (Merpay) - Marketplace and Mobile Payments App' (Japan version) versions prior to 4.49.1 allows a remote attacker to lead a user to access an arbitrary website and the website launches an arbitrary Activity of the app via the vulnerable App, which may result in Mercari account's access token being obtained."}],"affected":[{"vendor":"Mercari, Inc.","product":"Android App 'Mercari (Merpay) - Marketplace and Mobile Payments App' (Japan version)","versions":[{"version":"versions prior to 4.49.1","status":"affected"}]}],"references":[{"url":"https://jvn.jp/en/jp/JVN49465877/index.html","tags":["x_refsource_MISC"]}],"problemTypes":[{"descriptions":[{"description":"Improper Authorization in Handler for Custom URL Scheme","lang":"en","type":"text"}]}],"providerMetadata":{"shortName":"jpcert","dateUpdated":"2021-11-24T08:25:38.000Z","orgId":"ede6fdc4-6654-4307-a26d-3331c018e2ce"},"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"vultures@jpcert.or.jp","ID":"CVE-2021-20835","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"Android App 'Mercari (Merpay) - Marketplace and Mobile Payments App' (Japan version)","version":{"version_data":[{"version_value":"versions prior to 4.49.1"}]}}]},"vendor_name":"Mercari, Inc."}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"Improper authorization in handler for custom URL scheme vulnerability in Android App 'Mercari (Merpay) - Marketplace and Mobile Payments App' (Japan version) versions prior to 4.49.1 allows a remote attacker to lead a user to access an arbitrary website and the website launches an arbitrary Activity of the app via the vulnerable App, which may result in Mercari account's access token being obtained."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"Improper Authorization in Handler for Custom URL Scheme"}]}]},"references":{"reference_data":[{"name":"https://jvn.jp/en/jp/JVN49465877/index.html","refsource":"MISC","url":"https://jvn.jp/en/jp/JVN49465877/index.html"}]}}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://jvn.jp/en/jp/JVN49465877/index.html","tags":["x_refsource_MISC","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-03T17:53:23.012Z"}}]}}}