{"id":"CVE-2021-20671","aliases":["EUVD-2021-8089","GHSA-84w3-v2m2-fj4m"],"status":"published","title":"Invalid file validation on the upload feature in GROWI versions v4.2.2 allows a remote attacker...","description":"Invalid file validation on the upload feature in GROWI versions v4.2.2 allows a remote attacker with administrative privilege to overwrite the files on the server, which may lead to arbitrary code execution.","severity":{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.019,"percentile":0.79848,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2021-03-10T09:20:34Z","modified":"2026-10-24T10:30:21Z","products":[{"vendor":"growi, inc.","product":"growi"},{"vendor":"weseek","product":"growi"},{"vendor":"weseek, inc.","product":"growi"}],"references":[{"url":"https://weseek.co.jp/security/2021/03/08/vulnerability/growi-prevent-multiple-xss/","tags":["x_refsource_MISC","x_transferred","Vendor Advisory","advisory"]},{"url":"https://jvn.jp/en/vu/JVNVU94889258/index.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-20671"},{"url":"https://github.com/advisories/GHSA-84w3-v2m2-fj4m"}],"sources":{"cve":[{"id":"CVE-2021-20671","description":"Invalid file validation on the upload feature in GROWI versions v4.2.2 allows a remote attacker with administrative privilege to overwrite the files on the server, which may lead to arbitrary code execution.","status":"published","published":"2021-03-10T09:20:34Z","modified":"2024-08-03T17:45:45.225Z","updated_at":"2026-11-02T14:32:55.564736Z"}],"euvd":[{"id":"EUVD-2021-8089","description":"Invalid file validation on the upload feature in GROWI versions v4.2.2 allows a remote attacker with administrative privilege to overwrite the files on the server, which may lead to arbitrary code execution.","status":"published","published":"2021-03-10T09:20:34Z","modified":"2024-08-03T17:45:45Z","updated_at":"2026-11-03T03:25:08.33351Z"}],"ghsa":[{"id":"GHSA-84w3-v2m2-fj4m","title":"Invalid file validation on the upload feature in GROWI versions v4.2.2 allows a remote attacker...","description":"Invalid file validation on the upload feature in GROWI versions v4.2.2 allows a remote attacker with administrative privilege to overwrite the files on the server, which may lead to arbitrary code execution.","status":"published","published":"2022-05-24T17:44:13Z","modified":"2023-01-29T05:05:36Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:45:50.403728Z"}],"nvd":[{"id":"CVE-2021-20671","description":"Invalid file validation on the upload feature in GROWI versions v4.2.2 allows a remote attacker with administrative privilege to overwrite the files on the server, which may lead to arbitrary code execution.","status":"published","published":"2021-03-10T10:15:12.88Z","modified":"2026-06-17T03:34:13.263Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.5,"vector":"AV:N/AC:L/Au:S/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:06:50.399901Z"}],"osv":[{"id":"CVE-2021-20671","description":"Invalid file validation on the upload feature in GROWI versions v4.2.2 allows a remote attacker with administrative privilege to overwrite the files on the server, which may lead to arbitrary code execution.","status":"published","published":"2021-03-10T10:15:12.88Z","modified":"2026-10-24T10:30:21.974489005Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:18.004149Z"}]}}