parse-community/parse-server · Security
Parse Server missing audience validation in Keycloak authentication adapter
- GHSA ID
- GHSA-48mh-j4p5-7j9v
- CVE ID
- CVE-2026-30949
- Severity
- high
- Published
- Updated
- CVSS v4
- 7.6 · CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Description
Impact
The Keycloak authentication adapter does not validate the azp (authorized party) claim of Keycloak access tokens against the configured client-id. A valid access token issued by the same Keycloak realm for a different client application can be used to authenticate as any user on the Parse Server that uses the Keycloak adapter. This enables cross-application account takeover in multi-client Keycloak realms.
All Parse Server deployments that use the Keycloak authentication adapter with a Keycloak realm that has multiple client applications are affected.
Patches
The fix replaces the userinfo HTTP call with local JWT verification and enforces azp claim validation against the configured client-id.
Workarounds
None.
References
- GitHub security advisory: https://github.com/parse-community/parse-server/security/advisories/GHSA-48mh-j4p5-7j9v
- Fix Parse Server 9: https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.5
- Fix Parse Server 8: https://github.com/parse-community/parse-server/releases/tag/8.6.18
CWEs
- CWE-287 · Improper Authentication
References
- https://github.com/parse-community/parse-server/security/advisories/GHSA-48mh-j4p5-7j9v ↗
- https://nvd.nist.gov/vuln/detail/CVE-2026-30949 ↗
- https://github.com/parse-community/parse-server/releases/tag/8.6.18 ↗
- https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.5 ↗
- https://github.com/advisories/GHSA-48mh-j4p5-7j9v ↗