CVE-2026-30863CRITICAL 9.8EPSS p36.5%
CVE-2026-30863CVE-2026-30863
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.
Scoring
| CVSS 3.1 | 9.8 (CRITICAL) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 0.46% probability of exploitation · percentile 36.5% · 2026-06-19T12:03:05Z |
| Published | 2026-03-07 |
| Last modified | 2026-03-10 |
Underlying weaknesses· 2
References
2
| Type | Target | Confidence | Tier |
|---|---|---|---|
| Weakness | Improper Authenticationcwe-287 | 0% | live |
| Weakness | Incorrect Authorizationcwe-863 | 0% | live |
Related by meaning· 6
Nearest entities by semantic similarity across the cs-graph corpus.