Parse Server missing audience validation in Keycloak authentication adapter

高 8.8CVE-2026-30949 · BIT-parse-2026-30949 · GHSA-48mh-j4p5-7j9v · 10/03/2026 公開 · 17/06/2026 更新

要点

CVE-2026-30949 は parse-server (parseplatform), parse-server に影響する深刻度「高」 (CVSS 8.8) の脆弱性です。
今後30日間に悪用される確率（EPSS）：0.45%（全脆弱性の 39.3% より高い）。
対処：9.5.2, 8.6.18, 9.5.2-alpha.5 以降に更新してください。

パッケージ	影響を受けるバージョン	修正済みバージョン
parse-server parseplatform	`= 9.5.2≥ 9.0.0, < 9.5.2< 8.6.18`	`9.5.28.6.18`
parse-server npm	`≥ 9.0.0, < 9.5.2-alpha.5< 8.6.18`	`9.5.2-alpha.58.6.18`

概要

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

NVD の説明

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.5.2-alpha.5 and 8.6.18, 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. This vulnerability is fixed in 9.5.2-alpha.5 and 8.6.18.