CVE-2025-5101
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-08-27

Last updated on: 2025-09-02

Assigner: GitLab Inc.

Description
An issue has been discovered in GitLab CE/EE affecting all versions before 18.1.5, 18.2 before 18.2.5, and 18.3 before 18.3.1 that under certain conditions could have allowed an authenticated attacker to distribute malicious code that appears harmless in the web interface by taking advantage of ambiguity between branches and tags during repository imports.
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Meta Information
Published
2025-08-27
Last Modified
2025-09-02
Generated
2026-06-16
AI Q&A
2025-08-27
EPSS Evaluated
2026-06-14
NVD
CVE-2025-5101
EUVD
EUVD-2025-25949
Affected Vendors & Products
Showing 6 associated CPEs
Vendor Product Version / Range
gitlab gitlab to 18.1.5 (exc)
gitlab gitlab to 18.1.5 (exc)
gitlab gitlab From 18.2.0 (inc) to 18.2.5 (exc)
gitlab gitlab From 18.2.0 (inc) to 18.2.5 (exc)
gitlab gitlab 18.3.0
gitlab gitlab 18.3.0
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-94 The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.
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Executive Summary

This vulnerability in GitLab CE/EE versions before 18.1.5, 18.2 before 18.2.5, and 18.3 before 18.3.1 allows an authenticated attacker to distribute malicious code that appears harmless in the web interface. This is possible due to ambiguity between branches and tags during repository imports, which the attacker can exploit under certain conditions.

Impact Analysis

The vulnerability can impact you by allowing an authenticated attacker to inject malicious code into your repositories that looks harmless when viewed in the web interface. This could lead to the execution or distribution of harmful code within your development environment, potentially compromising the integrity of your software projects.

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