GHSA-4fxf-xgrm-8fcj

Source

https://github.com/advisories/GHSA-4fxf-xgrm-8fcj

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/08/GHSA-4fxf-xgrm-8fcj/GHSA-4fxf-xgrm-8fcj.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-4fxf-xgrm-8fcj

Aliases

CVE-2025-56236

Published

2025-08-28T15:30:42Z

Modified

2025-08-28T17:27:25Z

Severity

6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N CVSS Calculator

Summary

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

Details

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.

Database specific

{
    "cwe_ids": [
        "CWE-434",
        "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-08-28T16:47:04Z",
    "nvd_published_at": "2025-08-28T15:16:02Z",
    "severity": "MODERATE"
}

References

Affected packages

NuGet / FormCMS

Package

Name: FormCMS; View open source insights on deps.dev
Purl: pkg:nuget/FormCMS

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

0.5.7

Affected versions

0.*

0.4.4

0.4.5

0.4.6

0.4.7

0.4.8

0.4.9

0.5.0

0.5.1

0.5.2

0.5.3

0.5.4

0.5.5

0.5.6

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/08/GHSA-4fxf-xgrm-8fcj/GHSA-4fxf-xgrm-8fcj.json"