What is CVE-2020-21483?

CVE-2020-21483 is a high-severity vulnerability in Jizhicms, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 7.2/10. Published 2021-09-15.

How severe is CVE-2020-21483?

High severity. CVSS v3 base score is 7.2 out of 10.

Arbitrary file upload in Jizhicms

CVE-2020-21483

An arbitrary file upload vulnerability in Jizhicms v1.5 allows attackers to execute arbitrary code via a crafted .jpg file which is later changed to a PHP file.

Vulnerability class: Unrestricted File Upload

Published 2021-09-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.017 (76.1th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 76.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000

Affected products

Jizhicms — versions 1.5

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

www.porlockz.com/A-arbitrary-file-upload-vulnerability-in-jizhicms-v1-5/ (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-21483?: CVE-2020-21483 is a high-severity vulnerability in Jizhicms, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 7.2/10. Published 2021-09-15.
How severe is CVE-2020-21483?: High severity. CVSS v3 base score is 7.2 out of 10.