CVE-2026-3848

Received Received - Intake

Improper Input Validation in GitLab Import Enables SSRF

Publication date: 2026-03-11

Last updated on: 2026-04-16

Assigner: GitLab Inc.

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.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-03-11

Last Modified

2026-04-16

Generated

2026-07-06

AI Q&A

2026-03-11

EPSS Evaluated

2026-07-05

NVD

CVE-2026-3848

EUVD

EUVD-2026-11208

Affected Vendors & Products

Vendor	Product	Version / Range
gitlab	gitlab	From 18.8.0 (inc) to 18.8.6 (exc)
gitlab	gitlab	From 18.9.0 (inc) to 18.9.2 (exc)
gitlab	gitlab	From 18.8.0 (inc) to 18.8.6 (exc)
gitlab	gitlab	From 18.9.0 (inc) to 18.9.2 (exc)
gitlab	gitlab	From 8.11.0 (inc) to 18.7.6 (exc)
gitlab	gitlab	From 8.11.0 (inc) to 18.7.6 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-93	The product uses CRLF (carriage return line feeds) as a special element, e.g. to separate lines or records, but it does not neutralize or incorrectly neutralizes CRLF sequences from inputs.

Attack-Flow Graph

Mitigation Strategies

To mitigate this vulnerability, you should upgrade GitLab CE/EE to a fixed version. Specifically, update to version 18.7.6 or later if you are using the 18.7 series, 18.8.6 or later for the 18.8 series, or 18.9.2 or later for the 18.9 series.

Executive Summary

This vulnerability in GitLab CE/EE versions before 18.7.6, 18.8.6, and 18.9.2 allows an authenticated user to make unintended internal requests through proxy environments. It occurs due to improper input validation in the import functionality, which could be exploited under certain conditions.

Impact Analysis

The vulnerability could allow an authenticated user to send unintended internal requests, potentially exposing internal services or data that should not be accessible. This could lead to partial confidentiality loss within the affected GitLab environment.

Compliance Impact

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Detection Guidance

I don't know

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