UpHeron
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Servers and applications

CVE-2025-2256

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.

Severity
High 7.5
Published
12 Sept 2025
Last changed
19 Oct 2026
Added to UpHeron
21 Oct 2026
Fixed in
18.1.6, 18.2.6, 18.3.2
Sources
NVD

Affected software

SoftwareAffected versions
GitLabServers and applications · cpe:a:gitlab:gitlab
  • From 7.12.0 before 18.1.6
  • From 18.2.0 before 18.2.6
  • From 18.3.0 before 18.3.2

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2025-2256
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2025-2256