Information Disclosure Vulnerability in GitLab by GitLab Inc.
CVE-2025-9484

4.3MEDIUM

Key Information:

Vendor

Gitlab
Status
Gitlab
Vendor
CVE Published:
8 April 2026

What is CVE-2025-9484?

An information disclosure vulnerability exists in GitLab EE that could allow authenticated users to gain access to the email addresses of other users. This issue arises through specific GraphQL queries, potentially compromising user privacy. The vulnerability has been addressed in patches released in subsequent versions, emphasizing the importance of keeping GitLab installations updated to ensure user data protection.

Affected Version(s)

GitLab 16.6 < 18.8.9

GitLab 18.9 < 18.9.5

GitLab 18.10 < 18.10.3

References

https://gitlab.com/gitlab-org/gitlab/-/issues/565363
issue-trackingpermissions-required
https://hackerone.com/reports/3303810
technical-descriptionexploitpermissions-required
https://about.gitlab.com/releases/2026/04/08/patch-releas...

CVSS V3.1

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

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

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