CVE-2025-56236

MEDIUM

Formcms < 0.5.7 - XSS

Title source: rule
STIX 2.1

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.

References (2)

Core 2

Scores

CVSS v3 6.1
EPSS 0.0004
EPSS Percentile 11.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-79
Status published
Products (2)
formcms/formcms 0.5.5 - 0.5.7
nuget/FormCMS 0 - 0.5.7NuGet
Published Aug 28, 2025
Tracked Since Feb 18, 2026