Denial of Service Vulnerability in GitLab by GitLab Inc.
CVE-2026-1168

7.5HIGH

Key Information:

Vendor

Gitlab
Status
Gitlab
Vendor
CVE Published:
16 September 2026

What is CVE-2026-1168?

An issue in GitLab CE/EE versions prior to 19.1.8, 19.2.6, and 19.3.2 has been identified that allows an unauthenticated user to trigger a denial of service. This is due to improper resource allocation limits in the GraphQL complexity calculation logic, which could be exploited under certain conditions. Users are advised to update their GitLab instances to the latest versions to mitigate this vulnerability.

Affected Version(s)

GitLab 18.4.6 < 19.1.8

GitLab 19.2 < 19.2.6

GitLab 19.3 < 19.3.2

References

https://hackerone.com/reports/3461590
technical-descriptionexploitpermissions-required
https://gitlab.com/gitlab-org/gitlab/-/work_items/586586
https://docs.gitlab.com/releases/patches/patch-release-gi...

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Thanks [joaxcar](https://hackerone.com/joaxcar) for reporting this vulnerability through our HackerOne bug bounty program
.