CVE-2026-34373

HIGH

Parse Server: GraphQL API endpoint ignores CORS origin restriction

Title source: cna

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.

References (5)

Scores

CVSS v3 8.8
EPSS 0.0002
EPSS Percentile 4.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-346
Status published
Products (5)
npm/parse-server 9.0.0 - 9.7.0-alpha.10npm
parse-community/parse-server < 8.6.66
parse-community/parse-server >= 9.0.0, < 9.7.0-alpha.10
parseplatform/parse-server 9.7.0 alpha1 (9 CPE variants)
parseplatform/parse-server 3.5.0 - 8.6.66
Published Mar 31, 2026
Tracked Since Mar 31, 2026