CVE-2026-1184: Deserialization of Untrusted Data in GitLab

Published May 14, 2026
·
Updated

GitLab has remediated an issue in GitLab EE affecting all versions from 11.9 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 uploading a specially crafted file due to improper validation.

Affected Software

4 affected components
GitLab GitLab EE>=11.9<18.9.7, >=18.10<18.10.6, >=18.11<18.11.3
GitLab GitLab>=11.9.0<18.9.7
GitLab GitLab>=18.10.0<18.10.6
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·05:37 AM
Data Sourced
via MITRE·05:37 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-2026-1184?

CVE-2026-1184 has been classified with a severity rating that indicates a potential denial of service vulnerability.

2

How do I fix CVE-2026-1184?

To fix CVE-2026-1184, upgrade GitLab EE to versions 18.9.7, 18.10.6, or 18.11.3 or later.

3

Which versions are affected by CVE-2026-1184?

CVE-2026-1184 affects GitLab EE versions from 11.9 up to but not including 18.9.7, 18.10 up to but not including 18.10.6, and 18.11 up to but not including 18.11.3.

4

Can CVE-2026-1184 be exploited by unauthenticated users?

Yes, CVE-2026-1184 can potentially be exploited by unauthenticated users through the upload of specially crafted files.

5

What type of vulnerability is CVE-2026-1184?

CVE-2026-1184 is a deserialization of untrusted data vulnerability that could lead to denial of service.

Company

Resources

Contact

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