Input Validation Vulnerability in GitLab CE/EE Products
CVE-2026-7427

5.3MEDIUM

Key Information:

Vendor

Gitlab
Status
Gitlab
Vendor
CVE Published:
12 August 2026

What is CVE-2026-7427?

An input validation issue has been discovered in GitLab CE/EE that affects several versions, enabling unauthenticated users to potentially trigger a denial of service. This flaw occurs due to inadequate validation of user inputs, which can lead to service unavailability under certain conditions. GitLab has issued patches to address this vulnerability in the affected versions, ensuring the integrity and availability of its services.

Affected Version(s)

GitLab 18.5 < 19.0.6

GitLab 19.1 < 19.1.4

GitLab 19.2 < 19.2.2

References

https://gitlab.com/gitlab-org/gitlab/-/work_items/598561
https://hackerone.com/reports/3638799
technical-descriptionexploitpermissions-required
https://docs.gitlab.com/releases/patches/patch-release-gi...

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
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 [aphantom](https://hackerone.com/aphantom) for reporting this vulnerability through our HackerOne bug bounty program
.