CVE-2026-35412 Directus has a TUS Upload Authorization Bypass Allows Arbitrary File Overwrite
Authenticated users can bypass row-level permissions to overwrite arbitrary files via the TUS upload endpoint.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-35412?
CVE-2026-35412 is a high-severity missing authorization vulnerability in Monospace Directus, published on 6 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Directus is a real-time API and App dashboard for managing SQL database content. Prior to 11.16.1, Directus' TUS resumable upload endpoint (/files/tus) allows any authenticated user with basic file upload permissions to overwrite arbitrary existing files by UUID. The TUS controller performs only collection-level authorization checks, verifying the user has some permission on directus_files, but never validates item-level access to the specific file being replaced. As a result, row-level permission rules (e.g., "users can only update their own files") are completely bypassed via the TUS path while being correctly enforced on the standard REST upload path. This vulnerability is fixed in 11.16.1.
Weakness: CWE-863
Which versions are affected by CVE-2026-35412?
2 open source packages ship an affected version, including directus. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
directus npm | All versions | 11.16.1 |
directus npm | All versions | 11.16.1 |
Products include Monospace Directus.
How do I fix CVE-2026-35412?
Upgrade directus to 11.16.1 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-35412 being exploited?
There is no known exploitation of CVE-2026-35412 in the wild and no public exploit code.
Other vulnerabilities in Monospace Directus
- CVE-2022-26969 Insecure default value for CORS configuration
- CVE-2025-55746 Directus allows unauthenticated file upload and file modification due to lacking input sanitization
- CVE-2026-35408 Directus is Missing Cross-Origin Opener Policy
- CVE-2026-61836 Directus: Authorization-dependent response served from unsegmented cache key
- CVE-2025-30353 Directus's webhook trigger flows can leak sensitive data
Sources
Also known as GHSA-qqmv-5p3g-px89.