{"cve":"CVE-2021-20829","nvd":{"published":"2021-09-21T10:15:07.543","modified":"2026-06-17T03:34:30.393","status":"Modified","description":"Cross-site scripting vulnerability due to the inadequate tag sanitization in GROWI versions v4.2.19 and earlier allows remote attackers to execute an arbitrary script on the web browser of the user who accesses a specially crafted page.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1},"cwes":["CWE-79"],"references":["https://jvn.jp/en/vu/JVNVU94889258/index.html","https://weseek.co.jp/security/2021/09/17/vulnerability/growi-prevent-multiple-xss-addition/","https://jvn.jp/en/vu/JVNVU94889258/index.html","https://weseek.co.jp/security/2021/09/17/vulnerability/growi-prevent-multiple-xss-addition/"],"products":["weseek:growi"],"source":"nvd","synced_at":"2026-10-19T21:23:41.316049955+00:00"},"epss":{"cve":"CVE-2021-20829","score":0.00754,"percentile":0.55094,"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."]}