Improper Input Validation in GitLab CE/EE by GitLab
CVE-2026-1606

4.3MEDIUM

Key Information:

Vendor

Gitlab
Status
Gitlab
Vendor
CVE Published:
25 June 2026

What is CVE-2026-1606?

An improper input validation vulnerability has been identified in GitLab CE/EE, impacting multiple versions. This flaw could allow authenticated users to hide content within Snippets, presenting a risk of unauthorized content visibility management. The issue has been addressed in version updates, providing necessary patches to enhance the security framework.

Affected Version(s)

GitLab 14.8 < 18.11.6

GitLab 19.0 < 19.0.3

GitLab 19.1 < 19.1.1

References

https://hackerone.com/reports/3527473
technical-descriptionexploitpermissions-required
https://gitlab.com/gitlab-org/gitlab/-/work_items/588128
https://docs.gitlab.com/releases/patches/patch-release-gi...

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Thanks [st4nly0n](https://hackerone.com/st4nly0n) for reporting this vulnerability through our HackerOne bug bounty program
.