CVE-2025-11447: Allocation of Resources Without Limits or Throttling in GitLab

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-10-27 · updated 2026-10-19
Weakness: CWE-770

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 11.0 before 18.3.5, 18.4 before 18.4.3, and 18.5 before 18.5.1 that could have allowed an unauthenticated attacker to cause a denial of service condition by sending GraphQL requests with crafted JSON payloads.

Affected products

GitLab: from 11.0.0 before 18.3.5; from 18.4.0 before 18.4.3; 18.5.0 — fixed in 18.3.5, 18.4.3

How to fix

Upgrade to a fixed version: GitLab 18.3.5, 18.4.3. Check the vendor advisory for mitigations.

References

https://about.gitlab.com/releases/2025/10/22/patch-release-gitlab-18-5-1-released/
https://gitlab.com/gitlab-org/gitlab/-/issues/574858
https://hackerone.com/reports/3367019

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