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5.0
GitLab: Attackers can make unintended internal requests
CVE-2026-3848
BIT-gitlab-2026-3848
Summary
GitLab has fixed a security issue that let authenticated users make unauthorized internal requests to your GitLab instance. This was due to a mistake in how GitLab handled certain types of input. Update your GitLab to the latest version to protect your instance.
What to do
- Update gitlab to version 18.9.2.
Affected software
| Vendor | Product | Affected versions | Fix available |
|---|---|---|---|
| – | gitlab | > 18.9.0 , <= 18.9.2 | 18.9.2 |
Original title
Improper Neutralization of CRLF Sequences ('CRLF Injection') in GitLab
Original description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 8.11 before 18.7.6, 18.8 before 18.8.6, and 18.9 before 18.9.2 that could have allowed an authenticated user to make unintended internal requests through proxy environments under certain conditions due to improper input validation in import functionality.
nvd CVSS3.1
5.0
Vulnerability type
CWE-93
Published: 13 Mar 2026 · Updated: 14 Mar 2026 · First seen: 11 Mar 2026