{"id":"CVE-2021-20721","aliases":["EUVD-2021-8135","GHSA-8438-2753-v3v3"],"status":"published","title":"KonaWiki2 versions prior to 2.2.4 allows a remote attacker to upload arbitrary files via...","description":"KonaWiki2 versions prior to 2.2.4 allows a remote attacker to upload arbitrary files via unspecified vectors. If the file contains PHP scripts, arbitrary code may be executed.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.01522,"percentile":0.74977,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-434"],"published":"2021-05-20T01:15:23Z","modified":"2026-10-24T10:30:20Z","products":[{"vendor":"kujirahand","product":"konawiki"},{"vendor":"kujirahand","product":"konawiki2"}],"references":[{"url":"https://kujirahand.com/konawiki/","tags":["x_refsource_MISC","x_transferred","Vendor Advisory","advisory"]},{"url":"https://jvn.jp/en/jp/JVN34232719/index.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-20721"},{"url":"https://github.com/advisories/GHSA-8438-2753-v3v3"}],"sources":{"cve":[{"id":"CVE-2021-20721","description":"KonaWiki2 versions prior to 2.2.4 allows a remote attacker to upload arbitrary files via unspecified vectors. If the file contains PHP scripts, arbitrary code may be executed.","status":"published","published":"2021-05-20T01:15:23Z","modified":"2024-08-03T17:53:21.815Z","updated_at":"2026-11-02T14:32:55.564736Z"}],"euvd":[{"id":"EUVD-2021-8135","description":"KonaWiki2 versions prior to 2.2.4 allows a remote attacker to upload arbitrary files via unspecified vectors. If the file contains PHP scripts, arbitrary code may be executed.","status":"published","published":"2021-05-20T01:15:23Z","modified":"2024-08-03T17:53:21Z","updated_at":"2026-11-03T03:25:08.33351Z"}],"ghsa":[{"id":"GHSA-8438-2753-v3v3","title":"KonaWiki2 versions prior to 2.2.4 allows a remote attacker to upload arbitrary files via...","description":"KonaWiki2 versions prior to 2.2.4 allows a remote attacker to upload arbitrary files via unspecified vectors. If the file contains PHP scripts, arbitrary code may be executed.","status":"published","published":"2022-05-24T19:02:54Z","modified":"2023-01-29T05:06:18Z","cwes":["CWE-434"],"updated_at":"2026-11-02T14:45:59.496932Z"}],"nvd":[{"id":"CVE-2021-20721","description":"KonaWiki2 versions prior to 2.2.4 allows a remote attacker to upload arbitrary files via unspecified vectors. If the file contains PHP scripts, arbitrary code may be executed.","status":"published","published":"2021-05-20T02:15:07.22Z","modified":"2026-06-17T03:34:19.16Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T14:06:53.987491Z"}],"osv":[{"id":"CVE-2021-20721","description":"KonaWiki2 versions prior to 2.2.4 allows a remote attacker to upload arbitrary files via unspecified vectors. If the file contains PHP scripts, arbitrary code may be executed.","status":"published","published":"2021-05-20T02:15:07.22Z","modified":"2026-10-24T10:30:20.181190451Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:18.004149Z"}]}}