Parse Server: Streaming file download bypasses afterFind file trigger authorization
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-285.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| parse-community | parse-server | before 8.6.71; 9.0.0 to before 9.7.1-alpha.1 | 8.6.71, 9.7.1-alpha.1 | Patch available | CNA |
| — | parse-server (npm) | 9.0.0 to before 9.7.1-alpha.1 | 9.7.1-alpha.1 | Patch available | GHSA-hpm8-9qx6-jvwv |
| — | parse-server (npm) | before 8.6.71 | 8.6.71 | Patch available | GHSA-hpm8-9qx6-jvwv |
- parse-server Vendorparse-community Affected before 8.6.71; 9.0.0 to before 9.7.1-alpha.1 Fixed in 8.6.71, 9.7.1-alpha.1 Patch available CNA
- parse-server (npm) Vendor— Affected 9.0.0 to before 9.7.1-alpha.1 Fixed in 9.7.1-alpha.1 Patch available GHSA-hpm8-9qx6-jvwv
- parse-server (npm) Vendor— Affected before 8.6.71 Fixed in 8.6.71 Patch available GHSA-hpm8-9qx6-jvwv
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:* | before 8.6.71; 9.0.0 to before 9.7.1 | Vulnerable | parse-community |
- cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:* Versions before 8.6.71; 9.0.0 to before 9.7.1 Vulnerable ·parse-community
Remediation
- Fix · CNA parse-server (parse-community) Fixed in 8.6.71, 9.7.1-alpha.1
- Fix · GHSA-hpm8-9qx6-jvwv parse-server (npm) Fixed in 9.7.1-alpha.1 Advisory →
- Fix · GHSA-hpm8-9qx6-jvwv parse-server (npm) Fixed in 8.6.71 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-34784
- 2026-10-03 Alias added: GHSA-hpm8-9qx6-jvwv
References
Patch 4
- https://github.com/parse-community/parse-server/pull/10361
- https://github.com/parse-community/parse-server/pull/10362
- https://github.com/parse-community/parse-server/commit/053109b3ee71815bc39ed84116c108ff9edbf337
- https://github.com/parse-community/parse-server/commit/a0b0c69fc44f87f80d793d257344e7dcbf676e22
Advisory 2
More parse-community Parse-server vulnerabilities
- TI-2022-08574 Command Injection in Parse server CVSS 3.1CRITICAL 10.0
- TI-2024-18136 Parse Server literalizeRegexPart SQL Injection CVSS 3.1CRITICAL 10.0
- TI-2022-18768 Parse Server vulnerable to Remote Code Execution via prototype pollution in MongoDB BSON parser CVSS 3.1CRITICAL 9.8
- TI-2024-31550 Parse Server's custom object ID allows to acquire role privileges CVSS 3.1HIGH 8.1
- TI-2023-18316 Parse Server vulnerable to remote code execution via MongoDB BSON parser through prototype pollution CVSS 3.1CRITICAL 9.8
- TI-2026-23790 Parse Server session token exfiltration via `redirectClassNameForKey` query parameter CVSS 4.0CRITICAL 9.9
Sources
- CVE-2026-34784 · CVE Program
- CVE-2026-34784 · NVD
- FIRST EPSS
- GHSA-hpm8-9qx6-jvwv · GitHub Advisory Database · CC BY 4.0
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