CVE-2026-35200
CVE-2026-35200 · Parse Server has a file upload Content-Type override via extension mismatch
This page contains facts from public vulnerability sources. Check the original advisory before updating.
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 8.6.73 and 9.7.1-alpha.4, a file can be uploaded with a filename extension that passes the file extension allowlist (e.g., .txt) but with a Content-Type header that differs from the extension (e.g., text/html). The Content-Type is passed to the storage adapter without consistency validation. Storage adapters that store and serve the provided Content-Type (such as S3 or GCS) serve the file with the mismatched Content-Type. The default GridFS adapter is not affected because it derives Content-Type from the filename at serving time. This vulnerability is fixed in 8.6.73 and 9.7.1-alpha.4.
CVSS 2.1 · Low · EPSS 0.2% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
parse-server
- Versions
- >= 9.0.0, < 9.7.1-alpha.4: Affected
- < 8.6.73: Affected
No fix published
parse-server npm
- Affected ranges
- SEMVER: ≥ 9.0.0, < 9.7.1-alpha.4
Update to 9.7.1-alpha.4
parse-server npm
- Affected ranges
- SEMVER: < 8.6.73
Update to 8.6.73