CVE-2025-2256

HIGH

7.5

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.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published9/12/2025

Last Modified9/20/2025

Sourcenvd

Honeypot Sightings0

Affected Products

gitlab:gitlab

Weaknesses (CWE)

CWE-1284

References

https://about.gitlab.com/releases/2025/09/10/patch-release-gitlab-18-3-2-released/(cve@gitlab.com)

https://gitlab.com/gitlab-org/gitlab/-/issues/524633(cve@gitlab.com)

https://hackerone.com/reports/3019485(cve@gitlab.com)

IOC Correlations

No correlations recorded

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