CVE-2025-2256

HIGH EPSS 37.1%
Published Sep 12, 20259mo ago · Modified Jun 17, 20262w ago
7.5 CVSS 3.1
High
Find Similar
Published Sep 12, 2025 9mo ago
Last Modified Jun 17, 2026 2w ago

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 Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
37.1% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-1284

Affected Products 6

VendorProductVersionRange
gitlabgitlab*≥7.12.0  –  <18.1.6
gitlabgitlab*≥7.12.0  –  <18.1.6
gitlabgitlab*≥18.2.0  –  <18.2.6
gitlabgitlab*≥18.2.0  –  <18.2.6
gitlabgitlab*≥18.3.0  –  <18.3.2
gitlabgitlab*≥18.3.0  –  <18.3.2

References 3

  • about.gitlab.com https://about.gitlab.com/releases/2025/09/10/patch-release-gitlab-18-3-2-released/
    Release NotesVendor Advisory
  • gitlab.com https://gitlab.com/gitlab-org/gitlab/-/issues/524633
    Broken Link
  • hackerone.com https://hackerone.com/reports/3019485
    Permissions Required

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.