{"cve":"CVE-2021-20671","nvd":{"published":"2021-03-10T10:15:12.880","modified":"2026-06-17T03:34:13.263","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","score":7.2},"cwes":["CWE-20"],"references":["https://jvn.jp/en/vu/JVNVU94889258/index.html","https://weseek.co.jp/security/2021/03/08/vulnerability/growi-prevent-multiple-xss/","https://jvn.jp/en/vu/JVNVU94889258/index.html","https://weseek.co.jp/security/2021/03/08/vulnerability/growi-prevent-multiple-xss/"],"products":["weseek:growi"],"source":"nvd","synced_at":"2026-10-19T21:15:50.279857260+00:00"},"epss":{"cve":"CVE-2021-20671","score":0.019,"percentile":0.79675,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}