CVE-2025-2256
Unknown
Unknown - Not Provided
BaseFortify
Publication date: 2025-09-12
Last updated on: 2025-09-20
Assigner: GitLab Inc.
Description
Description
An issue has been discovered in GitLab CE/EE affecting all versions from 7.12 before 18.1.6, 18.2 before 18.2.6, and 18.3 before 18.3.2 that could have allowed unauthorized users to render the GitLab instance unresponsive to legitimate users by sending multiple concurrent large SAML responses.
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| gitlab | gitlab | From 7.12.0 (inc) to 18.1.6 (exc) |
| gitlab | gitlab | From 7.12.0 (inc) to 18.1.6 (exc) |
| gitlab | gitlab | From 18.2.0 (inc) to 18.2.6 (exc) |
| gitlab | gitlab | From 18.2.0 (inc) to 18.2.6 (exc) |
| gitlab | gitlab | From 18.3.0 (inc) to 18.3.2 (exc) |
| gitlab | gitlab | From 18.3.0 (inc) to 18.3.2 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-1284 | The product receives input that is expected to specify a quantity (such as size or length), but it does not validate or incorrectly validates that the quantity has the required properties. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability in GitLab CE/EE allows unauthorized users to make the GitLab instance unresponsive to legitimate users by sending multiple concurrent large SAML responses. It affects all versions from 7.12 before 18.1.6, 18.2 before 18.2.6, and 18.3 before 18.3.2.
How can this vulnerability impact me? :
The vulnerability can cause a denial of service by making the GitLab instance unresponsive, preventing legitimate users from accessing the service.
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