CVE-2025-56236 Details
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.
A stored cross-site scripting vulnerability has been identified in FormCms version 0.5.5, within the avatar upload feature. Authenticated users can upload .html files containing malicious JavaScript, which are then accessible via a public URL. When a privileged user, such as a Super Admin, accesses the file, the script executes in their browser context. This execution allows the attacker to perform unauthorized actions on behalf of the victim, such as managing users and roles or accessing sensitive application data.
Users can update to FormCms version 0.5.7, which addresses this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Aug 28, 2025References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/FormCms/FormCms/issues/27 | [email protected] | ExploitIssue Tracking |
| https://github.com/KKC73/me/blob/main/CVE-2025-56236/README.md | [email protected] | Third Party Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| formcms formcms | >= 0.5.5, < 0.5.7 |
CPE
Remediation
| |
Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 26, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Sep 9, 2025 | Initial Analysis | [email protected] |
| Aug 28, 2025 | CVE Modified | CISA-ADP |
| Aug 28, 2025 | New CVE Received | [email protected] |