What is CVE-2021-20721?

CVE-2021-20721 is a critical-severity vulnerability in Kujirahand Konawiki, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2021-05-20.

How severe is CVE-2021-20721?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Arbitrary file upload in Kujirahand Konawiki

CVE-2021-20721

KonaWiki2 versions prior to 2.2.4 allows a remote attacker to upload arbitrary files via unspecified vectors. If the file contains PHP scripts, arbitrary code may be executed.

Vulnerability class: Unrestricted File Upload

EPSS: 0.015 (72.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Kujirahand Konawiki
Kujirahand Konawiki2 — versions versions prior to 2.2.4

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

vultures@jpcert.or.jp (x_refsource_MISC, Vendor Advisory)
vultures@jpcert.or.jp (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-20721?: CVE-2021-20721 is a critical-severity vulnerability in Kujirahand Konawiki, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2021-05-20.
How severe is CVE-2021-20721?: Critical severity. CVSS v3 base score is 9.8 out of 10.