CVE-2026-126933
Zipline 4.0.0 before 4.8.0 Disabled Extensions Upload Filter Bypass via Extension Format Mismatch
CVSS Score
4.3
EPSS Score
0.0%
EPSS Percentile
0th
Zipline 4.0.0 before 4.8.0 contains an upload filter bypass vulnerability that allows users with upload access to store blocked file types due to extension format mismatch. The upload and partial handlers compare dotted, case-sensitive extensions against undotted disabledExtensions entries, letting authenticated or permitted unauthenticated folder uploaders bypass administrator restrictions.
| CWE | CWE-184 |
| 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
4.0.0 < 4.8.0
References
github.com: https://github.com/diced/zipline/security/advisories/GHSA-wwrw-gq56-7wpj github.com: https://github.com/diced/zipline/commit/dbc1fe502130a8ebd95fa04886efec01402e5b5f 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/upload/index.ts#L170 github.com: https://github.com/diced/zipline/blob/v4.7.0/src/server/routes/api/upload/partial.ts#L294 vulncheck.com: https://www.vulncheck.com/advisories/zipline-4.0.0-before-4.8.0-disabled-extensions-upload-filter-bypass-via-extension-format-mismatch
Credits
Sandipkumar sah