CVE-2021-20104

8.1 highEPSS 2.2%

High (8.1) in machform machform. EPSS 2.2% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

8.1 high

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 2.2% chance of exploitation in the next 30 days; higher than 82% of CVEs (scores of 2026-10-31)
CWE: CWE-434
Published: 2021-06-29
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

machform:machform

References

https://www.tenable.com/security/research/tra-2021-25%2Chttps://www.machform.com/blog-machform-16-released/
https://www.tenable.com/security/research/tra-2021-25%2Chttps://www.machform.com/blog-machform-16-released/

Check your stack JSON