Improper Input Validation in GitLab CE/EE
CVE-2026-3848

5MEDIUM

Key Information:

Vendor

Gitlab
Status
Gitlab
Vendor
CVE Published:
11 March 2026

What is CVE-2026-3848?

GitLab has addressed a vulnerability that affects the import functionality in GitLab CE/EE across various versions. This issue allows authenticated users to potentially exploit improper input validation, enabling them to make unintended internal requests through proxy environments under specific conditions. It is crucial for users and administrators to ensure they are running patched versions to mitigate this risk.

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Deploy the Patch

Affected Version(s)

GitLab 8.11 < 18.7.6

GitLab 18.8 < 18.8.6

GitLab 18.9 < 18.9.2

References

https://gitlab.com/gitlab-org/gitlab/-/work_items/577298
https://about.gitlab.com/releases/2026/03/11/patch-releas...

CVSS V3.1

Score:
5
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Thanks [shelld3c](https://hackerone.com/shells3c) for reporting this vulnerability.
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