CVE-2026-30863

critical · 9.3

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.

9.3

CVSS

0.5%

EPSS (exploit prob.)

43rd

EPSS percentile

2026-03-07

Published

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weaknesses

CWE-287CWE-863

Affected products

Vendor	Product	Affected versions
parseplatform	parse-server	< 8.6.10
parseplatform	parse-server	>= 9.0.0, < 9.5.0
parseplatform	parse-server	9.5.0
parseplatform	parse-server	9.5.0
parseplatform	parse-server	9.5.0
parseplatform	parse-server	9.5.0
parseplatform	parse-server	9.5.0
parseplatform	parse-server	9.5.0
parseplatform	parse-server	9.5.0
parseplatform	parse-server	9.5.0
parseplatform	parse-server	9.5.0
parseplatform	parse-server	9.5.0

Check a specific version with /api/v1/cve/match.

References

https://github.com/parse-community/parse-server/security/advisories/GHSA-x6fw-778m-wr9v

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-30863