CVE-2026-3160: Unintended Proxy or Intermediary ('Confused Deputy') in GitLab

Published May 14, 2026
·
Updated

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 13.7 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could have allowed an authenticated user to view Jira issues outside the configured project scope due to an integration filter functioning only as a display control rather than enforcing access boundaries as specified.

Affected Software

7 affected components
GitLab GitLab CE/EE>=13.7<18.9.7, >=18.10<18.10.6, >=18.11<18.11.3
GitLab GitLab>=13.7.0<18.9.7
GitLab GitLab>=13.7.0<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. Additionally, review the Jira API token used in your integration and ensure it is scoped to only the Jira projects you intend to expose. The project keys field in the integration configuration filters the displayed issues but does not restrict the token's access. To limit which issues can be read through the integration, generate the API token from a Jira account with access only to the desired projects.

Event History

May 14, 2026
CVE Published
via MITRE·05:35 AM
Data Sourced
via MITRE·05:35 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-2026-3160?

CVE-2026-3160 has been categorized as a moderate severity vulnerability.

2

How do I fix CVE-2026-3160?

To remediate CVE-2026-3160, upgrade GitLab CE/EE to versions 18.9.7, 18.10.6, or 18.11.3 or later.

3

What is the impact of CVE-2026-3160?

CVE-2026-3160 allows authenticated users to view Jira issues outside their configured project, potentially exposing sensitive information.

4

Which versions of GitLab are affected by CVE-2026-3160?

CVE-2026-3160 affects GitLab CE/EE versions from 13.7 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3.

5

Is CVE-2026-3160 fully mitigated in the patched versions?

Yes, the patched versions of GitLab CE/EE contain fixes that fully mitigate the vulnerabilities described in CVE-2026-3160.

Company

Resources

Contact

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