UpHeron
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Servers and applications

CVE-2023-4912

An issue has been discovered in GitLab EE affecting all versions starting from 10.5 before 16.4.3, all versions starting from 16.5 before 16.5.3, all versions starting from 16.6 before 16.6.1. It was possible for an attacker to cause a client-side denial of service using malicious crafted mermaid diagram input.

Severity
Medium 6.5
Published
1 Dec 2023
Last changed
17 Jun 2026
Added to UpHeron
21 Oct 2026
Fixed in
16.4.3, 16.5.3
Sources
NVD

Affected software

SoftwareAffected versions
GitLabServers and applications · cpe:a:gitlab:gitlab
  • From 10.5.0 before 16.4.3
  • From 16.5.0 before 16.5.3
  • Version 16.6.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2023-4912
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2023-4912