CVE-2026-1387
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
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| 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 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. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
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.
How can this vulnerability impact me? :
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.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
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.