Description
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0-alpha.11 and 8.6.37, Parse Server's built-in OAuth2 auth adapter exports a singleton instance that is reused directly across all OAuth2 provider configurations. Under concurrent authentication requests for different OAuth2 providers, one provider's token validation may execute using another provider's configuration, potentially allowing a token that should be rejected by one provider to be accepted because it is validated against a different provider's policy. Deployments that configure multiple OAuth2 providers via the oauth2: true flag are affected. This vulnerability is fixed in 9.6.0-alpha.11 and 8.6.37.
References (3)
Core 3
Core References
Vendor Advisory x_refsource_confirm
https://github.com/parse-community/parse-server/security/advisories/GHSA-2cjm-2gwv-m892
Release Notes x_refsource_misc
https://github.com/parse-community/parse-server/releases/tag/8.6.37
Release Notes x_refsource_misc
https://github.com/parse-community/parse-server/releases/tag/9.6.0-alpha.11
Scores
CVSS v3
7.4
EPSS
0.0007
EPSS Percentile
20.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-362
Status
published
Products (3)
npm/parse-server
9.0.0 - 9.6.0-alpha.11npm
parseplatform/parse-server
9.6.0 alpha1 (10 CPE variants)
parseplatform/parse-server
< 8.6.37
Published
Mar 12, 2026
Tracked Since
Mar 13, 2026