CVE-2026-34784
EPSS 0.02%Parser Server's streaming file download bypasses afterFind file trigger authorization
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.
Affected packages (2)
- Bitnami/parsefrom 0, < 8.6.71, >= 9.0.0, < 9.7.1
- npm/parse-server>= 9.0.0, < 9.7.1-alpha.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | 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 |
References (7)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2026-34784
- PATCHhttps://github.com/parse-community/parse-server
- WEBhttps://github.com/parse-community/parse-server/commit/053109b3ee71815bc39ed84116c108ff9edbf337
- WEBhttps://github.com/parse-community/parse-server/commit/a0b0c69fc44f87f80d793d257344e7dcbf676e22
- WEBhttps://github.com/parse-community/parse-server/pull/10361
- WEBhttps://github.com/parse-community/parse-server/pull/10362
- WEBhttps://github.com/parse-community/parse-server/security/advisories/GHSA-hpm8-9qx6-jvwv