CVE-2026-32101
CVE-2026-32101 · StudioCMS S3 Storage Manager Authorization Bypass via Missing `await` on Async Auth Check
This page contains facts from public vulnerability sources. Check the original advisory before updating.
StudioCMS is a server-side-rendered, Astro native, headless content management system. Prior to 0.3.1, the S3 storage manager's isAuthorized() function is declared async (returns Promise<boolean>) but is called without await in both the POST and PUT handlers. Since a Promise object is always truthy in JavaScript, !isAuthorized(type) always evaluates to false, completely bypassing the authorization check. Any authenticated user with the lowest visitor role can upload, delete, rename, and list all files in the S3 bucket. This vulnerability is fixed in 0.3.1.
CVSS 7.6 · High · EPSS 0.2% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
s3-storage
- Versions
- < 0.3.1: Affected
No fix published
@studiocms/s3-storage npm
- Affected ranges
- SEMVER: < 0.3.1
Update to 0.3.1