CVE-2026-126932
Zipline 4.6.2 before 4.8.0 Disabled MIME Type Policy Bypass via File Metadata Update
CVSS Score
4.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-434 |
| Vendor | diced |
| Product | zipline |
| Published | Nov 11, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None
Affected Versions
diced / zipline
4.6.2 < 4.8.0
References
github.com: https://github.com/diced/zipline/security/advisories/GHSA-rgxm-54cf-whf7 github.com: https://github.com/diced/zipline/commit/fc8e886ca841b86a3f677cd7dac1bf9a5bd45b2c github.com: https://github.com/diced/zipline/releases/tag/v4.8.0 github.com: https://github.com/diced/zipline/blob/v4.7.0/src/server/routes/api/user/files/%5Bid%5D/index.ts#L96 vulncheck.com: https://www.vulncheck.com/advisories/zipline-4.6.2-before-4.8.0-disabled-mime-type-policy-bypass-via-file-metadata-update
Credits
Sandipkumar sah