CVE-2026-34373 | THREATINT

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.

PUBLISHED Reserved 2026-03-27 | Published 2026-03-31 | Updated 2026-03-31 | Assigner GitHub_M

MEDIUM: 5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N

Problem types

CWE-346: Origin Validation Error

Product status

< 8.6.66

affected

>= 9.0.0, < 9.7.0-alpha.10

affected

References

github.com/...server/security/advisories/GHSA-q3p6-g7c4-829c

github.com/parse-community/parse-server/pull/10334

github.com/parse-community/parse-server/pull/10335

github.com/...ommit/0347641507891d0013ec57f7c10f012064f41263

github.com/...ommit/4dd0d3d8be1c39664c74ad10bb0abaa76bc41203

cve.org (CVE-2026-34373)

nvd.nist.gov (CVE-2026-34373)

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