CVE-2026-30949
published 2026-03-10CVE-2026-30949: 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…
PriorityP261high8.8CVSS 3.1
AVNACLPRLUINSUCHIHAH
EPSS
0.43%
34.1th percentile
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.
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| parse-community | parse-server | < 8.6.18 | 8.6.18 |
| parse-community | parse-server | — | — |
| parse-community | parse-server | >= 0 < 8.6.18 | 8.6.18 |
| parse-community | parse-server | >= 9.0.0 < 9.5.2-alpha.5 | 9.5.2-alpha.5 |
| parseplatform | parse-server | < 8.6.18 | 8.6.18 |
| parseplatform | parse-server | — | — |
| parseplatform | parse-server | >= 9.0.0 < 9.5.2 | 9.5.2 |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvdv4.07.6HIGHCVSS:4.0/AV:N/AC:L/AT:P/PR:L/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
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OSV
Parse Server missing audience validation in Keycloak authentication adapter
osv·2026-03-11
CVE-2026-30949 [HIGH] Parse Server missing audience validation in Keycloak authentication adapter
Parse Server missing audience validation in Keycloak authentication adapter
### 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 `clie
GHSA
Parse Server missing audience validation in Keycloak authentication adapter
ghsa·2026-03-11
CVE-2026-30949 [HIGH] CWE-287 Parse Server missing audience validation in Keycloak authentication adapter
Parse Server missing audience validation in Keycloak authentication adapter
### 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 `clie
No detection rules found.
No public exploits indexed.
2026-03-10
Published