CVE-2025-56236 – formcms

Package

Manager: nuget
Name: formcms
Vulnerable Version: >=0 <0.5.7

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N/E:H/RL:U/RC:R

CVSS v4.0: 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

EPSS: 0.00031 pctl0.07416

Details

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

Metadata

Created: 2025-08-28T15:30:42Z
Modified: 2025-08-28T16:47:04Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/08/GHSA-4fxf-xgrm-8fcj/GHSA-4fxf-xgrm-8fcj.json
CWE IDs: ["CWE-434", "CWE-79"]
Alternative ID: GHSA-4fxf-xgrm-8fcj
Finding: F425
Auto approve: 1