In short
- CVE-2025-56236 is a MEDIUM (CVSS 6.1) vulnerability affecting FormCMS, formcms (formcms).
- Chance of exploitation in the next 30 days (EPSS): 0.20%, higher than 10.3% of all vulnerabilities.
- Fix: update to 0.5.7 or later.
| Package | Affected versions | Patched versions |
|---|
| FormCMS NuGet | < 0.5.7
| 0.5.7
|
| formcms | ≥ 0.5.5, < 0.5.7
| 0.5.7
|
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.
NVD 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.
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