What is CVE-2021-20669?

CVE-2021-20669 is a medium-severity vulnerability in Weseek Growi, classified under Path Traversal. CVSS score: 4.7/10. Published 2021-03-10.

How severe is CVE-2021-20669?

Medium severity. CVSS v3 base score is 4.7 out of 10.

Path Traversal in Weseek Growi

CVE-2021-20669

Path traversal vulnerability in GROWI versions v4.2.2 and earlier allows an attacker with administrator rights to read and/or delete an arbitrary path via a specially crafted URL.

Vulnerability class: Path Traversal (Directory Traversal)

Published 2021-03-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.008 (54.5th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 54.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: +0.000

Affected products

Weseek Growi
Weseek, Inc. Growi — versions versions v4.2.2 and earlier

Weakness classification (CWE)

CWE-22 — Path Traversal

References

weseek.co.jp/security/2021/03/08/vulnerability/growi-prevent-multiple-xss/ (Vendor Advisory)
jvn.jp/en/vu/JVNVU94889258/index.html (Third Party Advisory)

Frequently asked questions

What is CVE-2021-20669?: CVE-2021-20669 is a medium-severity vulnerability in Weseek Growi, classified under Path Traversal. CVSS score: 4.7/10. Published 2021-03-10.
How severe is CVE-2021-20669?: Medium severity. CVSS v3 base score is 4.7 out of 10.