What is GHSA-4fxf-xgrm-8fcj?

GHSA-4fxf-xgrm-8fcj is a security advisory published by GitHub Security Advisories with Medium severity. FormCms avatar upload feature has a stored cross-site scripting (XSS) vulnerability

Which CVE IDs does GHSA-4fxf-xgrm-8fcj cover?

GHSA-4fxf-xgrm-8fcj covers the following CVE IDs: CVE-2025-56236. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

Which products are affected by GHSA-4fxf-xgrm-8fcj?

GHSA-4fxf-xgrm-8fcj affects 1 product, including: nuget/FormCMS:\u003c 0.5.7.

GHSA-4fxf-xgrm-8fcjMedium

FormCms avatar upload feature has a stored cross-site scripting (XSS) vulnerability

Vendor

GitHub Security Advisories

Published

August 28, 2025

Last Modified

August 28, 2025

🔗 CVE IDs covered (1)

CVE-2025-56236 →

📋 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.

🎯 Affected products1

nuget/FormCMS:< 0.5.7

🔗 References (4)

https://nvd.nist.gov/vuln/detail/CVE-2025-56236
https://github.com/FormCms/FormCms/issues/27
https://github.com/KKC73/me/blob/main/CVE-2025-56236/README.md
https://github.com/advisories/GHSA-4fxf-xgrm-8fcj