CVE-2026-126933 json
Zipline 4.0.0 before 4.8.0 Disabled Extensions Upload Filter Bypass via Extension Format Mismatch
published last mo. modified 11h ago also GHSA-wwrw-gq56-7wpj , EUVD-2026-124143
Unreviewed: the maintainers' own advisory
Published by the maintainers on their GitHub repository diced/zipline. GitHub has not reviewed it into the GitHub Advisory Database, so the affected packages and versions are the maintainers' word. Read the full advisory on GitHub.
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- —
- no EPSS score yet
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- diced zipline 4.8.0
Is CVE-2026-126933 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 5.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N |
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
| CNA | 4.0 | 5.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| NVD | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
Affected products
- diced zipline
Classification
- Weakness
-
- CWE-184 Incomplete List of Disallowed Inputs
References
-
github.com
/diced/zipline/commit/dbc1fe502130a8ebd95fa04886efec01402e5b5f
patch
-
github.com
/diced/zipline/security/advisories/GHSA-wwrw-gq56-7wpj
vendor-advisory, advisory
-
github.com
/diced/zipline/releases/tag/v4.8.0
release-notes
-
github.com
/diced/zipline/blob/v4.7.0/src/server/routes/api/upload/index.ts#L170
technical-description
-
github.com
/diced/zipline/blob/v4.7.0/src/server/routes/api/upload/partial.ts#L294
technical-description
-
vulncheck.com
/advisories/zipline-4.0.0-before-4.8.0-disabled-extensions-upload-filter-bypass-via-extension-format-mismatch
third-party-advisory
Sources
- CVE List CVE-2026-126933
- NVD CVE-2026-126933
- Maintainer advisory GHSA-wwrw-gq56-7wpj
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
The maintainers of diced/zipline published their own advisory on GitHub. Reviewed sources take precedence over it.