What is CVE-2021-47783?

CVE-2021-47783 is a medium-severity vulnerability in Phpwcms, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 5.4/10. Published 2026-01-16.

How severe is CVE-2021-47783?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Arbitrary file upload in Phpwcms

CVE-2021-47783

Phpwcms 1.9.30 contains a file upload vulnerability that allows authenticated attackers to upload malicious SVG files with embedded JavaScript. Attackers can upload crafted SVG payloads through the multiple file upload feature to potential…

Vulnerability class: Unrestricted File Upload

EPSS: 0.003 (19.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Phpwcms — versions 1.9.30

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

disclosure@vulncheck.com (Exploit, VDB Entry, exploit)
disclosure@vulncheck.com (Product, product)
disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2021-47783?: CVE-2021-47783 is a medium-severity vulnerability in Phpwcms, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 5.4/10. Published 2026-01-16.
How severe is CVE-2021-47783?: Medium severity. CVSS v3 base score is 5.4 out of 10.