Auth bypass in Mmattax Formstack Online Forms

CVE-2025-62738

Missing Authorization vulnerability in mmattax Formstack Online Forms formstack allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Formstack Online Forms: from n/a through <= 2.0.2.

Vulnerability class: Broken Access Control

Published · last modified .

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (15.3th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 15th percentile — 15.3% 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-2025-62738: held from 0.002 to 0.003.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2025-62738?
CVE-2025-62738 is a medium-severity vulnerability in Mmattax Formstack Online Forms, classified under Missing Authorization. CVSS score: 5.3/10. Published 2025-12-09.
How severe is CVE-2025-62738?
Medium severity. CVSS v3 base score is 5.3 out of 10.