CVE-2026-30863
CRITICAL
GHSA-x6fw-778m-wr9v
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
3Tags
Description
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.10 and 9.5.0-alpha.11, the Google, Apple, and Facebook authentication adapters use JWT verification to validate identity tokens. When the adapter's audience configuration option is not set (clientId for Google/Apple, appIds for Facebook), JWT verification silently skips audience claim validation. This allows an attacker to use a validly signed JWT issued for a different application to authenticate as any user on the target Parse Server. This issue has been patched in versions 8.6.10 and 9.5.0-alpha.11.
Analysis
Authentication bypass in Parse Server allows unauthenticated access to protected API endpoints. Parse Server is a popular open-source backend framework for mobile and web applications.
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Remediation
Within 24 hours: Identify all Parse Server deployments and document which authentication adapters are enabled. Within 7 days: Implement network segmentation to restrict Parse Server access and enable enhanced monitoring for authentication anomalies. …
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External POC / Exploit Code
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