CVE-2026-1659: Allocation of Resources Without Limits or Throttling in GitLab

Published May 14, 2026
·
Updated

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 9.0 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could have allowed an unauthenticated user to cause denial of service by sending specially crafted requests due to insufficient input validation.

Affected Software

8 affected components
GitLab GitLab CE>=9.0<18.9.7, >=18.10<18.10.6, >=18.11<18.11.3
GitLab GitLab EE>=9.0<18.9.7, >=18.10<18.10.6, >=18.11<18.11.3
GitLab GitLab>=9.0.0<18.9.7
GitLab GitLab>=9.0.0<18.9.7
GitLab GitLab>=18.10.0<18.10.6
GitLab GitLab>=18.10.0<18.10.6
GitLab GitLab>=18.11.0<18.11.3
GitLab GitLab>=18.11.0<18.11.3

Remediation

Information

Upgrade to versions 18.9.7, 18.10.6, 18.11.3 or above.

Event History

May 14, 2026
CVE Published
via MITRE·05:36 AM
Data Sourced
via MITRE·05:36 AM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·06:16 AM
DescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2026-1659?

CVE-2026-1659 is classified as a denial of service vulnerability that affects multiple versions of GitLab CE and EE.

2

How do I fix CVE-2026-1659?

To remediate CVE-2026-1659, you should upgrade to GitLab CE/EE version 18.9.7 or later, 18.10.6 or later, and 18.11.3 or later.

3

Which versions of GitLab are affected by CVE-2026-1659?

CVE-2026-1659 affects GitLab CE/EE versions from 9.0 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3.

4

Can CVE-2026-1659 be exploited by authenticated users?

No, CVE-2026-1659 can be exploited by unauthenticated users to cause denial of service.

5

What is the risk of not addressing CVE-2026-1659?

Failing to address CVE-2026-1659 could lead to denial of service, impacting the availability of your GitLab instance.

Company

Resources

Contact

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