CVE-2025-56236

Name: CVE-2025-56236
Creator: NVD / NIST
Published: 2025-08-28T15:16:02.953+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.20%

Last modified Jun 17, 2026

CVE-2025-56236 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. FormCms v0.5.5 contains a stored cross-site scripting (XSS) vulnerability in the avatar upload feature. Authenticated users can upload .html files containing malicious JavaScript, which are accessible via a public URL. EPSS estimates a 0.20% chance of exploitation in the next 30 days.

Description

FormCms v0.5.5 contains a stored cross-site scripting (XSS) vulnerability in the avatar upload feature. Authenticated users can upload .html files containing malicious JavaScript, which are accessible via a public URL. When a privileged user accesses the file, the script executes in their browser context.

Metrics

CVSS 3.1

6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.20%

9.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Formcms	Formcms	>= 0.5.5, < 0.5.7

References

https://github.com/FormCms/FormCms/issues/27Exploit, Issue Tracking
https://github.com/KKC73/me/blob/main/CVE-2025-56236/README.mdThird Party Advisory

Timeline

Published: Aug 28, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-56236?

How severe is CVE-2025-56236?

CVE-2025-56236 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.20% probability of exploitation in the next 30 days.

How do I fix CVE-2025-56236?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-56236?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST