# CVE-2023-28104: silverstripe/graphql Denial of Service vulnerability

> An attacker can cause a denial of service on websites using the Silverstripe GraphQL library by sending specially crafted queries to exposed endpoints.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 16 Mar 2023
- **Updated:** 25 Feb 2025
- **Also known as:** GHSA-67g8-c724-8mp3

## What is CVE-2023-28104?

CVE-2023-28104 is a high-severity denial of service vulnerability in silverstripe-graphql, published on 16 Mar 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

`silverstripe/graphql` serves Silverstripe data as GraphQL representations. In versions 4.2.2 and 4.1.1, an attacker could use a specially crafted graphql query to execute a denial of service attack against a website which has a publicly exposed graphql endpoint. This mostly affects websites with particularly large/complex graphql schemas. Users should upgrade to `silverstripe/graphql` 4.2.3 or 4.1.2 to remedy the vulnerability.

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

## Which versions are affected by CVE-2023-28104?

4 open source packages ship an affected version, including silverstripe/graphql. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `silverstripe/graphql` | Packagist | From 4.1.1 | 4.1.2 |
| `silverstripe/graphql` | Packagist | From 4.1.1 | 4.1.2 |
| `silverstripe/graphql` | Packagist | From 4.2.2 | 4.2.3 |
| `silverstripe/graphql` | Packagist | From 4.2.2 | 4.2.3 |

Products: Silverstripe Graphql.

## How do I fix CVE-2023-28104?

Upgrade silverstripe/graphql to a fixed version for your release line: 4.1.2 or 4.2.3.

## Is CVE-2023-28104 being exploited?

There is no known exploitation of CVE-2023-28104 in the wild and no public exploit code.

## Other vulnerabilities in silverstripe-graphql

- [CVE-2023-40180](https://insights.sbomify.com/CVE-2023-40180/): Denial of service vulnerability in silverstripe-graphql via recursive queries (high 7.5)
- [CVE-2023-44401](https://insights.sbomify.com/CVE-2023-44401/): Silverstripe GraqhQL's view permissions are bypassed for paginated lists of ORM data (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-28104 and fix it if it is affected.

What it is: CVE-2023-28104 is a high-severity denial of service vulnerability in silverstripe-graphql, published on 16 Mar 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-28104 in the wild and no public exploit code.

Affected packages and fixed versions:
- silverstripe/graphql (Packagist): affected from 4.1.1; fixed in 4.1.2
- silverstripe/graphql (Packagist): affected from 4.1.1; fixed in 4.1.2
- silverstripe/graphql (Packagist): affected from 4.2.2; fixed in 4.2.3
- silverstripe/graphql (Packagist): affected from 4.2.2; fixed in 4.2.3

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-2023-28104/ (Markdown: https://insights.sbomify.com/CVE-2023-28104/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-28104
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-28104
- OSV: https://osv.dev/vulnerability/CVE-2023-28104

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-28104/
Summaries are generated and may contain mistakes; the official description above is the record.