# CVE-2021-47713: Hasura GraphQL 1.3.3 Denial of Service via Malicious GraphQL Query

> Attackers can crash the Hasura GraphQL service by sending malicious queries with excessive nested fields, causing resource exhaustion.

- **Severity:** High 8.7 (`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`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 22 Dec 2025
- **Updated:** 14 Aug 2026
- **Also known as:** GHSA-c963-4j6g-xhmv

## What is CVE-2021-47713?

CVE-2021-47713 is a high-severity denial of service vulnerability in Hasura GraphQL, published on 22 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Hasura GraphQL 1.3.3 contains a denial of service vulnerability that allows attackers to overwhelm the service by crafting malicious GraphQL queries with excessive nested fields. Attackers can send repeated requests with extremely long query strings and multiple threads to consume server resources and potentially crash the GraphQL endpoint.

Weakness: CWE-770 (Allocation of Resources Without Limits or Throttling)

## Which versions are affected by CVE-2021-47713?

It affects 1 product.


Products: Hasura Graphql Engine.

## How do I fix CVE-2021-47713?

No fix has been published for CVE-2021-47713 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-47713 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47713 exists.

## Other vulnerabilities in Hasura GraphQL

- [CVE-2021-47748](https://insights.sbomify.com/CVE-2021-47748/): Hasura GraphQL 1.3.3 - Remote Code Execution (critical 9.3)
- [CVE-2022-46792](https://insights.sbomify.com/CVE-2022-46792/): Missing authorization in n/a (high 8.8)
- [CVE-2023-27588](https://insights.sbomify.com/CVE-2023-27588/): Unauthenticated path traversal vulnerability in Hasura GraphQL Engine (high 7.5)
- [CVE-2019-1020015](https://insights.sbomify.com/CVE-2019-1020015/): Auth bypass in graphql-engine (high 7.5)
- [CVE-2021-47714](https://insights.sbomify.com/CVE-2021-47714/): Hasura GraphQL 1.3.3 Local File Read via SQL Injection (medium 6.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-47713 and fix it if it is affected.

What it is: CVE-2021-47713 is a high-severity denial of service vulnerability in Hasura GraphQL, published on 22 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47713 exists.

Affected product: Hasura GraphQL. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2021-47713/ (Markdown: https://insights.sbomify.com/CVE-2021-47713/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-47713
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-47713
- OSV: https://osv.dev/vulnerability/CVE-2021-47713

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-47713/
Summaries are generated and may contain mistakes; the official description above is the record.