Description
Zipline 4.6.2 before 4.8.0 contains a policy bypass vulnerability that allows authenticated users to evade administrator-disabled MIME types by editing file metadata. Attackers can upload a permitted file, then set a disabled type such as text/html through PATCH /api/user/files/:id so /raw/:id serves that Content-Type.
Metrics
CVSS 3.1 4.3/10
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:NWeakness enumeration
Affected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| diced | zipline | >= 4.6.2, < 4.8.0 |
References
- https://github.com/diced/zipline/blob/v4.7.0/src/server/routes/api/user/files/%5Bid%5D/index.ts#L96
- https://github.com/diced/zipline/commit/fc8e886ca841b86a3f677cd7dac1bf9a5bd45b2c
- https://github.com/diced/zipline/releases/tag/v4.8.0
- https://github.com/diced/zipline/security/advisories/GHSA-rgxm-54cf-whf7
- https://www.vulncheck.com/advisories/zipline-4.6.2-before-4.8.0-disabled-mime-type-policy-bypass-via-file-metadata-update
Timeline
- Published
- Nov 11, 2026
- Last modified
- Nov 12, 2026
- NVD status
- Received