CVE-2026-30863

Critical

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.

SeverityCritical
CVSS9.8
Exploit probability—
ProductParseplatform Parse-server
PublishedMar 7, 2026
First seenMar 7, 2026

How to fix

Update
  • parseplatform parse-server8.6.10, 9.5.0 or later
  • parse-server9.5.0-alpha.11, 8.6.10 or later

Affected products

ProductAffected versionsFixed in
parseplatform parse-serverv < 8.6.10, 9.0.0 ≤ v < 9.5.0, 9.5.08.6.10, 9.5.0
parse-servernpm9.0.0-alpha.1 ≤ v < 9.5.0-alpha.11, v < 8.6.109.5.0-alpha.11, 8.6.10

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