MEDIUM

GHSA-6cwx-42hw-w69c

FormCMS has an improper access control vulnerability in the /api/schemas/history/[schemaId] endpoint

Quick fix

GHSA-6cwx-42hw-w69c — FormCMS: upgrade to the fixed version with the command below.

dotnet add package FormCMS --version 0.5.5

Details

An improper access control vulnerability in FormCms v0.5.4 in the /api/schemas/history/[schemaId] endpoint allows unauthenticated attackers to access historical schema data if a valid schemaId is known or guessed.

Are you affected?

Enter the version of the package you're using.

Affected packages

NuGet/FormCMS

Introduced in: 0Fixed in: 0.5.5

Fixdotnet add package FormCMS --version 0.5.5

References

https://nvd.nist.gov/vuln/detail/CVE-2025-55797[ADVISORY]
https://github.com/formcms/formcms/issues/19[WEB]
https://github.com/FormCms[WEB]
https://github.com/FormCms/FormCms[PACKAGE]
https://github.com/KKC73/me/tree/main/CVE-2025-55797[WEB]