What is CVE-2026-3848?

CVE-2026-3848 is a medium-severity vulnerability in Gitlab, classified under CRLF Injection. CVSS score: 5.0/10. Published 2026-03-11.

How severe is CVE-2026-3848?

Medium severity. CVSS v3 base score is 5.0 out of 10.

Vulnerability in Gitlab

CVE-2026-3848

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.

Vulnerability class: CRLF Injection

EPSS: 0.002 (8.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N.

Affected products

Gitlab — versions 8.11, 18.8, 18.9

Weakness classification (CWE)

CWE-93 — CRLF Injection

References

cve@gitlab.com (Broken Link)
cve@gitlab.com (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2026-3848?: CVE-2026-3848 is a medium-severity vulnerability in Gitlab, classified under CRLF Injection. CVSS score: 5.0/10. Published 2026-03-11.
How severe is CVE-2026-3848?: Medium severity. CVSS v3 base score is 5.0 out of 10.