CVE-2025-2256
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-12

Last updated on: 2025-09-20

Assigner: GitLab Inc.

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.
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Meta Information
Published
2025-09-12
Last Modified
2025-09-20
Generated
2026-06-16
AI Q&A
2025-09-12
EPSS Evaluated
2026-06-14
NVD
CVE-2025-2256
EUVD
EUVD-2025-29019
Affected Vendors & Products
Showing 6 associated CPEs
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
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KEV
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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.
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Executive Summary

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.

Impact Analysis

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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