What is CVE-2021-42242?

CVE-2021-42242 is a critical-severity vulnerability in Jflyfox Jfinal Cms. CVSS score: 9.8/10. Published 2022-05-05.

How severe is CVE-2021-42242?

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

Vulnerability in Jflyfox Jfinal Cms

CVE-2021-42242

A command execution vulnerability exists in jfinal_cms 5.0.1 via com.jflyfox.component.controller.Ueditor.

Published 2022-05-05 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.022 (81.6th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 81.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.020 · newest: 0.022 · change: +0.001

Affected products

Jflyfox Jfinal Cms — versions 5.0.1

References

github.com/jflyfox/jfinal_cms/issues/28 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-42242?: CVE-2021-42242 is a critical-severity vulnerability in Jflyfox Jfinal Cms. CVSS score: 9.8/10. Published 2022-05-05.
How severe is CVE-2021-42242?: Critical severity. CVSS v3 base score is 9.8 out of 10.