CVE-2026-32242

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 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 and 8.6.37.

How to fix CVE-2026-32242

To remediate CVE-2026-32242, upgrade the affected package to a fixed version below.

• —upgrade to 8.6.37 or later
• —upgrade to 9.6.0-alpha.11 or later

Is CVE-2026-32242 being exploited?

Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.

Affected packages (2)

• from 0, < 8.6.37, >= 9.0.0, < 9.6.0
• >= 9.0.0, < 9.6.0-alpha.11

CVSS scores

References (5)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2026-32242
• PATCHgithub.com/parse-community/parse-server
• WEBgithub.com/parse-community/parse-server/releases/tag/8.6.37
• WEBgithub.com/parse-community/parse-server/releases/tag/9.6.0-alpha.11