Moderate severityNVD Advisory· Published Aug 28, 2025· Updated Aug 28, 2025

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected packages

Versions sourced from the GitHub Security Advisory.

Package	Affected versions	Patched versions
FormCMSNuGet	< 0.5.7	0.5.7

Affected products

ghsa-coords
pkg:nuget/formcms
Range: < 0.5.7

Patches

Vulnerability mechanics

References

github.com/advisories/GHSA-4fxf-xgrm-8fcjghsaADVISORY
nvd.nist.gov/vuln/detail/CVE-2025-56236ghsaADVISORY
github.com/FormCms/FormCms/issues/27ghsaWEB
github.com/KKC73/me/blob/main/CVE-2025-56236/README.mdghsaWEB

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cvss	0.260
epss	0.000
exploit	0.000
kev	0.000
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ransomware	0.000