Directus has a TUS Upload Authorization Bypass Allows Arbitrary File Overwrite
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-863.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| directus | directus | before 11.16.1 | 11.16.1 | Patch available | CNA |
| — | directus (npm) | before 11.16.1 | 11.16.1 | Patch available | GHSA-qqmv-5p3g-px89 |
- directus Vendordirectus Affected before 11.16.1 Fixed in 11.16.1 Patch available CNA
- directus (npm) Vendor— Affected before 11.16.1 Fixed in 11.16.1 Patch available GHSA-qqmv-5p3g-px89
Remediation
- Fix · CNA directus (directus) Fixed in 11.16.1
- Fix · GHSA-qqmv-5p3g-px89 directus (npm) Fixed in 11.16.1 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-35412
- 2026-10-03 Alias added: GHSA-qqmv-5p3g-px89
References
More Directus vulnerabilities
- TI-2025-21659 Directus's webhook trigger flows can leak sensitive data CVSS 3.1HIGH 8.6
- TI-2024-36266 Directus allows unauthenticated access to WebSocket events and operations CVSS 3.1HIGH 7.5
- TI-2024-26791 Directus allows SSO User Enumeration CVSS 3.1HIGH 7.5
- TI-2024-23956 Directus is soft-locked by providing a string value to random string util CVSS 3.1HIGH 7.5
- TI-2024-26624 Directus Incorrectly handles _in` filter CVSS 3.1HIGH 7.7
- TI-2025-21658 Directus `search` query parameter allows enumeration of non permitted fields CVSS 3.1MEDIUM 5.3
Sources
- CVE-2026-35412 · CVE Program
- CVE-2026-35412 · NVD
- FIRST EPSS
- GHSA-qqmv-5p3g-px89 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences