---
cve: "CVE-2026-47138"
severity: "HIGH"
cvss: 8.7
epss: "0.9%"
vendor: "parse-community"
kev: false
exploited: false
published: "2026-06-12 19:16:28"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-10-01T07:26:01+02:00"
---

# CVE-2026-47138

> 8.7 HIGH · 🧪 PoC

## Beschreibung

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.77 and 9.9.1-alpha.1, an unauthenticated attacker who knows a publicly-known Parse Application ID can submit a single HTTP request whose client SDK version field contains adversarial input that triggers polynomial backtracking in a request-header parser. The parsing runs before session authentication and before rate limiting on every /parse/* request, so the request consumes seconds to minutes of synchronous CPU on a Node.js worker before any access control evaluates it. A small number of concurrent requests can saturate a worker; a single large request via the body-field variant can pin a worker for minutes. Production deployments running the default configuration are affected. This issue has been patched in versions 8.6.77 and 9.9.1-alpha.1.

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **none**
  - Automatable: **yes**
  - Technical Impact: **partial**

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
```

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

## Patch verfügbar (OSV)

- baa153c49083a57f00790c3e418cd5d45961113f (Commit)
- 216cf8335b1612c6315cbb24cc9ecacfa94d7c66 (Commit)

## Referenzen

- <https://github.com/parse-community/parse-server/security/advisories/GHSA-38m6-82c8-4xfm>
- <https://github.com/parse-community/parse-server/pull/10463>
- <https://github.com/parse-community/parse-server/pull/10464>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-47138) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_