---
cve: "CVE-2026-119286"
severity: "HIGH"
cvss: 7.5
epss: "0.4%"
vendor: "graphql-python"
kev: false
exploited: false
published: "2026-10-29 22:17:01"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-11-09T05:43:01+01:00"
---

# CVE-2026-119286

> 7.5 HIGH · 🧪 PoC

## Beschreibung

GraphQL-core is a Python port of the GraphQL.js reference implementation. From 3.3.0a3 until 3.3.1, validate() reuses a module-level ValidationAbortedError when a document exceeds max_errors. Python appends frames to the reused exception's traceback on every raise, retaining each document, validation context, and error set for the process lifetime. An unauthenticated client can repeatedly submit a small document with more than 100 validation errors to cause unbounded memory growth before query execution, eventually exhausting worker memory without disclosing or modifying data. This issue is fixed in version 3.3.1.

## CNA-Record (Kanon, cvelistV5)

- CNA: **GitHub_M**
- State: PUBLISHED
- Stand: 2026-10-30 15:58:44
- CNA-CVSS: **7.5** (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)

## CISA-Anreicherung (vulnrichment/ADP)

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

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Keine | good |
| I Integrität | Keine | good |
| A Verfügbarkeit | Hoch | bad |

## Schwachstellen-Klasse

- **CWE-400** — Uncontrolled Resource Consumption
  The product does not properly control the allocation and maintenance of a limited resource.
- **CWE-401** — Missing Release of Memory after Effective Lifetime
  The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.

## Angriffsmuster (CAPEC)

- [CAPEC-147 — XML Ping of the Death](https://capec.mitre.org/data/definitions/147.html) _(Severity: Medium)_
- [CAPEC-227 — Sustained Client Engagement](https://capec.mitre.org/data/definitions/227.html)
- [CAPEC-492 — Regular Expression Exponential Blowup](https://capec.mitre.org/data/definitions/492.html)

## ATT&CK-Techniken

- [T1499 — Endpoint Denial of Service](https://attack.mitre.org/techniques/T1499/)

## Patch verfügbar (OSV)

- d83193fef3cc943f3f632d93748ad56fd9b2f2fc (Commit)
- 3c319fd9f4b8f6c9db4189520561bf8dd0e70be9 (Commit)

## Referenzen

- <https://github.com/graphql-python/graphql-core/security/advisories/GHSA-mpqx-q82w-9x46>
- <https://github.com/graphql-python/graphql-core/issues/287>
- <https://github.com/graphql-python/graphql-core/pull/288>
- <https://github.com/graphql-python/graphql-core/commit/3c319fd9f4b8f6c9db4189520561bf8dd0e70be9>
- <https://github.com/graphql-python/graphql-core/releases/tag/v3.3.1>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2026-119286/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_