{"id":"CVE-2021-20671","details":"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.","modified":"2026-04-10T04:29:23.645781Z","published":"2021-03-10T10:15:12.880Z","references":[{"type":"ADVISORY","url":"https://jvn.jp/en/vu/JVNVU94889258/index.html"},{"type":"ADVISORY","url":"https://weseek.co.jp/security/2021/03/08/vulnerability/growi-prevent-multiple-xss/"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/weseek/growi","events":[{"introduced":"0"},{"last_affected":"5541c34604a7fe1403b32a4aeb1e57efde58b997"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"4.2.2"}]}}],"versions":["1.0.0-RC3","v1.0.0-RC","v1.0.0-RC2","v1.0.0-RC4","v1.3.0","v1.3.1","v1.4.0","v1.5.0","v1.5.1","v1.5.2","v1.5.3","v1.6.0","v4.2.2"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-20671.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"}]}