{"id":"CVE-2020-5604","aliases":["EUVD-2020-26765","GHSA-x466-xhx8-frqr"],"status":"published","title":"Android App 'Mercari' (Japan version) prior to version 3.52.0 allows arbitrary method execution...","description":"Android App 'Mercari' (Japan version) prior to version 3.52.0 allows arbitrary method execution of a Java object by a remote attacker via a Man-In-The-Middle attack by using Java Reflection API of JavaScript code on WebView.","severity":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01996,"percentile":0.80847,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-74"],"published":"2020-07-09T01:05:20Z","modified":"2026-06-17T03:21:40Z","products":[{"vendor":"mercari","product":"mercari"},{"vendor":"mercari, inc.","product":"android app 'mercari' (japan version)"}],"references":[{"url":"https://jvn.jp/en/jp/JVN93167107/index.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-5604"},{"url":"https://github.com/advisories/GHSA-x466-xhx8-frqr"}],"sources":{"cve":[{"id":"CVE-2020-5604","description":"Android App 'Mercari' (Japan version) prior to version 3.52.0 allows arbitrary method execution of a Java object by a remote attacker via a Man-In-The-Middle attack by using Java Reflection API of JavaScript code on WebView.","status":"published","published":"2020-07-09T01:05:20Z","modified":"2024-08-04T08:30:24.58Z","updated_at":"2026-11-02T14:35:47.22408Z"}],"euvd":[{"id":"EUVD-2020-26765","description":"Android App 'Mercari' (Japan version) prior to version 3.52.0 allows arbitrary method execution of a Java object by a remote attacker via a Man-In-The-Middle attack by using Java Reflection API of JavaScript code on WebView.","status":"published","published":"2020-07-09T01:05:20Z","modified":"2024-08-04T08:30:24Z","updated_at":"2026-11-03T03:08:06.272693Z"}],"ghsa":[{"id":"GHSA-x466-xhx8-frqr","title":"Android App 'Mercari' (Japan version) prior to version 3.52.0 allows arbitrary method execution...","description":"Android App 'Mercari' (Japan version) prior to version 3.52.0 allows arbitrary method execution of a Java object by a remote attacker via a Man-In-The-Middle attack by using Java Reflection API of JavaScript code on WebView.","status":"published","published":"2022-05-24T17:22:43Z","modified":"2024-04-04T02:54:53Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-74"],"updated_at":"2026-11-02T14:56:13.24073Z"}],"nvd":[{"id":"CVE-2020-5604","description":"Android App 'Mercari' (Japan version) prior to version 3.52.0 allows arbitrary method execution of a Java object by a remote attacker via a Man-In-The-Middle attack by using Java Reflection API of JavaScript code on WebView.","status":"published","published":"2020-07-09T02:15:10.527Z","modified":"2026-06-17T03:21:40.827Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:06:09.126752Z"}]}}