Arbitrary file upload in Machform

CVE-2021-20104

Machform prior to version 16 is vulnerable to unauthenticated remote code execution due to insufficient sanitization of file attachments uploaded with forms through upload.php.

Vulnerability class: Unrestricted File Upload

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.022 (81.7th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 81.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2021-20104: held from 0.022 to 0.022.

EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: +0.000

Affected products

  • Machform
  • Appnitro Machform — versions All versions prior to version 16

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-20104?
CVE-2021-20104 is a high-severity vulnerability in Machform, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.1/10. Published 2021-06-29.
How severe is CVE-2021-20104?
High severity. CVSS v3 base score is 8.1 out of 10.