CVE-2026-34373
Parse Server: GraphQL API endpoint ignores CORS origin restriction
- State
- Published
- Severity
- 5.3 Medium
- Published
- Mar 31, 2026
- Updated
- Mar 31, 2026
- Reserved
- Mar 27, 2026
Description
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.66 and 9.7.0-alpha.10, the GraphQL API endpoint does not respect the allowOrigin server option and unconditionally allows cross-origin requests from any website. This bypasses origin restrictions that operators configure to control which websites can interact with the Parse Server API. The REST API correctly enforces the configured allowOrigin restriction. This issue has been patched in versions 8.6.66 and 9.7.0-alpha.10.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N | GitHub_M |
Weaknesses
- CWE-346 Origin Validation Error
Affected Products
| Product | Versions |
|---|---|
parse-serverparse-community |
|
References
- https://github.com/parse-community/parse-server/security/advisories/GHSA-q3p6-g7c4-829c
- https://github.com/parse-community/parse-server/pull/10334
- https://github.com/parse-community/parse-server/pull/10335
- https://github.com/parse-community/parse-server/commit/0347641507891d0013ec57f7c10f012064f41263
- https://github.com/parse-community/parse-server/commit/4dd0d3d8be1c39664c74ad10bb0abaa76bc41203
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