CVE-2025-0186
Denial of Service in GitLab Discussions Endpoint via Crafted Requests
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 10.6.0 (inc) to 18.9.6 (exc) |
| gitlab | gitlab | From 18.10.0 (inc) to 18.10.4 (exc) |
| gitlab | gitlab | From 10.6.0 (inc) to 18.9.6 (exc) |
| gitlab | gitlab | From 18.10.0 (inc) to 18.10.4 (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
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 on the 18.9 branch, 18.10.4 or later if on the 18.10 branch, or 18.11.1 or later if on the 18.11 branch.
This will prevent authenticated users from causing denial of service by exhausting server resources through crafted requests to the discussions endpoint.
Can you explain this vulnerability to me?
This vulnerability affects GitLab CE/EE versions from 10.6 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 exhausting server resources. This is done by making specially crafted requests to a discussions endpoint, which under certain conditions can overload the server.
How can this vulnerability impact me? :
The impact of this vulnerability is a denial of service condition. An authenticated user could exploit this issue to exhaust server resources, potentially making the GitLab service unavailable or severely degraded for legitimate users.