CVE-2025-6016
Denial of Service in GitLab Notes via Resource Exhaustion
Publication date: 2026-04-22
Last updated on: 2026-04-23
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 18.10.0 (inc) to 18.10.4 (exc) |
| gitlab | gitlab | From 18.10.0 (inc) to 18.10.4 (exc) |
| gitlab | gitlab | From 9.2.0 (inc) to 18.9.6 (exc) |
| gitlab | gitlab | From 9.2.0 (inc) to 18.9.6 (exc) |
| gitlab | gitlab | 18.11.0 |
| gitlab | gitlab | 18.11.0 |
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 CE/EE affects versions from 9.2 before 18.9.6, 18.10 before 18.10.4, and 18.11 before 18.11.1. It allows an authenticated user to cause a denial of service (DoS) by exploiting insufficient resource allocation limits when retrieving notes under certain conditions.
How can this vulnerability impact me? :
The impact of this vulnerability is a denial of service condition, meaning an authenticated user could cause the GitLab service to become unavailable or unresponsive by triggering excessive resource consumption during note retrieval.
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, you should upgrade GitLab CE/EE to a fixed version. Specifically, update to version 18.9.6 or later if you are using the 9.2 to 18.9 series, 18.10.4 or later if you are using the 18.10 series, or 18.11.1 or later if you are using the 18.11 series.