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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.003 (21.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 21.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
- GitLab — versions 8.11, 18.8, 18.9
Weakness classification (CWE)
References
- gitlab.com/gitlab-org/gitlab/-/work_items/577298 (Broken Link)
- about.gitlab.com/releases/2026/03/11/patch-release-gitlab-18-9-2-released/ (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.