GitHub Advisoryadvisory · npm
GHSA-hpm8-9qx6-jvwv Parser Server's streaming file download bypasses afterFind file trigger authorization
HIGH
Official page ↗
- Aliases
- CVE-2026-34784
- Ecosystem
- npm
- Packages
- parse-server
- Severity
- High
- 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
- Weaknesses
- CWE-285
- Reviewed
- 2026-04-01
Affected packages
• npm parse-server: >= 9.0.0, < 9.7.1-alpha.1 → fixed in 9.7.1-alpha.1
• npm parse-server: < 8.6.71 → fixed in 8.6.71
Description
Impact
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`.
Patches
The streaming file download path now executes the `afterFind(Parse.File)` trigger before sending any data. Authentication is resolved from the session token header so that trigger validators can distinguish authenticated from unauthenticated requests.
Workarounds
Use `beforeFind(Parse.File)` instead of `afterFind(Parse.File)` for file access authorization. The `beforeFind` trigger runs on all download paths including streaming.
Related
Alias · CVE (1)
- CVE-2026-34784 Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. vulnerability
Weakness · CWE (1)
- CWE-285 Improper Authorization weakness
References
- https://github.com/parse-community/parse-server/security/advisories/GHSA-hpm8-9qx6-jvwv web
- https://nvd.nist.gov/vuln/detail/CVE-2026-34784 advisory
- https://github.com/parse-community/parse-server/pull/10361 web
- https://github.com/parse-community/parse-server/pull/10362 web
- https://github.com/parse-community/parse-server/commit/053109b3ee71815bc39ed84116c108ff9edbf337 web
- https://github.com/parse-community/parse-server/commit/a0b0c69fc44f87f80d793d257344e7dcbf676e22 web
- https://github.com/parse-community/parse-server package