CVE-2026-30949 Parse Server is missing audience validation in Keycloak authentication adapter
Attackers can authenticate as any user by using a valid token from a different client application in multi-client Keycloak realms.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-30949?
CVE-2026-30949 is a high-severity authentication bypass vulnerability in Parseplatform Parse-Server, published on 10 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-287
Which versions are affected by CVE-2026-30949?
5 open source packages ship an affected version, including parse-server and parse. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
parse-server npm | All versions | 8.6.18 |
parse-server npm | All versions | 8.6.18 |
parse-server npm | From 9.0.0 | 9.5.2-alpha.5 |
parse-server npm | From 9.0.0 | 9.5.2-alpha.5 |
parse Bitnami | All versions | 8.6.18, 9.5.2 |
Products include Parseplatform Parse-Server.
How do I fix CVE-2026-30949?
Upgrade parse-server to a fixed version for your release line: 8.6.18 or 9.5.2-alpha.5.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-30949 being exploited?
There is no known exploitation of CVE-2026-30949 in the wild and no public exploit code.
Other vulnerabilities in Parseplatform Parse-Server
- CVE-2026-30966 Parse Server role escalation and CLP bypass via direct `_Join` table write
- CVE-2024-27298 Parse Server literalizeRegexPart SQL Injection
- CVE-2022-24760 Command Injection in Parse server
- CVE-2026-30965 Parse Server session token exfiltration via `redirectClassNameForKey` query parameter
- CVE-2023-36475 Parse Server vulnerable to remote code execution via MongoDB BSON parser through prototype pollution
Sources
Also known as BIT-parse-2026-30949, GHSA-48mh-j4p5-7j9v.