What’s Vulnerable › Vulnerabilities
CVE-2026-35412: Directus has a TUS Upload Authorization Bypass Allows Arbitrary File Overwrite
- Severity: high (CVSS 8.1 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-04-06 · updated 2026-07-24
- Weakness: CWE-863
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.
Affected products
- directus: before 11.16.1 — fixed in 11.16.1
How to fix
Upgrade to a fixed version: directus 11.16.1. Check the vendor advisory for mitigations.
References
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