---
cve: "CVE-2026-30949"
severity: "HIGH"
cvss: 7.6
epss: "43%"
vendor: "parse-community"
kev: false
exploited: false
published: "2026-03-10 21:16:47"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-09T12:25:53+02:00"
---

# CVE-2026-30949

> 7.6 HIGH · 🧪 PoC

## Beschreibung

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.

## CVSS-Vektor

```
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
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- 0d4e3bbb9ba4bfab7b8362cf286bf45beb970de6 (Commit)
- e9b020b233d811186072447e5e255580e54a71f9 (Commit)

## Referenzen

- <https://github.com/parse-community/parse-server/security/advisories/GHSA-48mh-j4p5-7j9v>
- <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>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-30949) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_