CVE-2026-27804
CVE-2026-27804 · Parse Server: Account takeover via JWT algorithm confusion in Google auth adapter
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Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.3 and 9.1.1-alpha.4, an unauthenticated attacker can forge a Google authentication token with `alg: "none"` to log in as any user linked to a Google account, without knowing their credentials. All deployments with Google authentication enabled are affected. The fix in versions 8.6.3 and 9.1.1-alpha.4 hardcodes the expected `RS256` algorithm instead of trusting the JWT header, and replaces the Google adapter's custom key fetcher with `jwks-rsa` which rejects unknown key IDs. As a workaround, dsable Google authentication until upgrading is possible.
CVSS 9.3 · Kritisch · EPSS 0,3% · Korrektur verfügbar
- Veröffentlicht
- Aktualisiert
Technologie-Stack: node
Betroffene Produkte und Versionen
parse-server
- Softwareversionen
- >= 9.0.0, < 9.3.1-alpha.4: Betroffen
- < 8.6.3: Betroffen
Keine Korrektur veröffentlicht
parse-server npm
- Betroffene Versionsbereiche
- SEMVER: ≥ 9.0.0, < 9.3.1-alpha.4
Auf 9.3.1-alpha.4 aktualisieren
parse-server npm
- Betroffene Versionsbereiche
- SEMVER: < 8.6.3
Auf 8.6.3 aktualisieren
Originalquellen
- https://github.com/parse-community/parse-server/security/advisories/GHSA-4q3h-vp4r-prv2
- https://github.com/parse-community/parse-server/commit/9b94083accb7f3e72c6b8126c195c7a03dd2dfd7
- https://github.com/parse-community/parse-server/commit/9d5942d50e55c822924c27b05aa98f1393e7a330
- https://github.com/parse-community/parse-server/releases/tag/8.6.3
- https://github.com/parse-community/parse-server/releases/tag/9.3.1-alpha.4
- https://nvd.nist.gov/vuln/detail/CVE-2026-27804