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.
Metrics
Affected Vendors & Products
References
History
Thu, 12 Mar 2026 20:15:00 +0000
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ssvc
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Thu, 12 Mar 2026 10:15:00 +0000
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Studiocms
Studiocms s3-storage |
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| Vendors & Products |
Studiocms
Studiocms s3-storage |
Wed, 11 Mar 2026 20:30:00 +0000
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| Description | 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. | |
| Title | StudioCMS S3 Storage Manager Authorization Bypass via Missing `await` on Async Auth Check | |
| Weaknesses | CWE-863 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-03-12T19:51:19.210Z
Reserved: 2026-03-10T22:02:38.854Z
Link: CVE-2026-32101
Updated: 2026-03-12T19:51:16.394Z
Status : Awaiting Analysis
Published: 2026-03-11T21:16:16.010
Modified: 2026-03-12T21:08:22.643
Link: CVE-2026-32101
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