CVE-2025-56236

Published Aug 28, 2025 CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-26075 FormCms avatar upload feature has a stored cross-site scripting (XSS) vulnerability
Github GHSA Github GHSA GHSA-4fxf-xgrm-8fcj FormCms avatar upload feature has a stored cross-site scripting (XSS) vulnerability
History
Type Values Removed Values Added
First Time appeared Formcms
Formcms formcms
CPEs cpe:2.3:a:formcms:formcms:*:*:*:*:*:*:*:*
Vendors & Products Formcms
Formcms formcms
Type Values Removed Values Added
Weaknesses CWE-79
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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
Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Aug 28, 2025, 8:03 PM
Reserved
Aug 16, 2025, 12:00 AM
Status
Analyzed
Published
Aug 28, 2025, 3:16 PM
Modified
Sep 26, 2026, 12:10 AM