UpHeron
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Servers and applications

CVE-2026-3988

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.5 before 18.8.7, 18.9 before 18.9.3, and 18.10 before 18.10.1 that could have allowed an unauthenticated user to cause a denial of service by making the GitLab instance unresponsive due to improper input validation in GraphQL request processing.

Severity
High 7.5
Published
25 Mar 2026
Last changed
17 Jun 2026
Added to UpHeron
21 Oct 2026
Fixed in
18.8.7, 18.9.3
Sources
NVD

Affected software

SoftwareAffected versions
GitLabServers and applications · cpe:a:gitlab:gitlab
  • From 18.5.0 before 18.8.7
  • From 18.9.0 before 18.9.3
  • Version 18.10.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-3988
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-3988