CVE-2026-1387
Analyzed Analyzed - Analysis Complete
Denial of Service via Malicious File Upload in GitLab EE

Publication date: 2026-02-11

Last updated on: 2026-02-12

Assigner: GitLab Inc.

Description
GitLab has remediated an issue in GitLab EE affecting all versions from 15.6 before 18.6.6, 18.7 before 18.7.4, and 18.8 before 18.8.4 that could have allowed an authenticated user to cause Denial of Service by uploading a malicious file and repeatedly querying it through GraphQl.
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Meta Information
Published
2026-02-11
Last Modified
2026-02-12
Generated
2026-06-16
AI Q&A
2026-02-11
EPSS Evaluated
2026-06-14
NVD
CVE-2026-1387
EUVD
EUVD-2026-6256
Affected Vendors & Products
Showing 3 associated CPEs
Vendor Product Version / Range
gitlab gitlab From 18.7.0 (inc) to 18.7.4 (exc)
gitlab gitlab From 18.8.0 (inc) to 18.8.4 (exc)
gitlab gitlab From 15.6.0 (inc) to 18.6.6 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-770 The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.
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Executive Summary

This vulnerability in GitLab EE affects versions from 15.6 before 18.6.6, 18.7 before 18.7.4, and 18.8 before 18.8.4. It allows an authenticated user to cause a Denial of Service (DoS) by uploading a malicious file and repeatedly querying it through GraphQL.

Impact Analysis

The impact of this vulnerability is a Denial of Service condition, which means that an attacker who is authenticated can disrupt the normal operation of the GitLab service by uploading a malicious file and repeatedly querying it. This can lead to service unavailability or degraded performance.

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

To mitigate this vulnerability, you should upgrade GitLab EE to a fixed version. The issue affects all versions from 15.6 before 18.6.6, 18.7 before 18.7.4, and 18.8 before 18.8.4. Updating to version 18.6.6, 18.7.4, 18.8.4 or later will remediate the vulnerability.

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