What’s Vulnerable › Vulnerabilities

CVE-2021-20671

• Severity: high (CVSS 7.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-03-10 · updated 2026-06-17
• Weakness: CWE-20

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.

Affected products

• WESEEK, Inc. GROWI: 4.2.2

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/

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