CVE-2026-34784 PUBLISHED

Parse Server: Streaming file download bypasses afterFind file trigger authorization

Assigner: GitHub_M
Reserved: 30.03.2026 Published: 31.03.2026 Updated: 31.03.2026

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.71 and 9.7.1-alpha.1, file downloads via HTTP Range requests bypass the afterFind(Parse.File) trigger and its validators on storage adapters that support streaming (e.g. the default GridFS adapter). This allows access to files that should be protected by afterFind trigger authorization logic or built-in validators such as requireUser. This issue has been patched in versions 8.6.71 and 9.7.1-alpha.1.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CVSS Score: 8.2

Product Status

Vendor parse-community
Product parse-server
Versions
  • Version < 8.6.71 is affected
  • Version >= 9.0.0, < 9.7.1-alpha.1 is affected

References

Problem Types

  • CWE-285: Improper Authorization CWE