UpHeron
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Servers and applications

CVE-2025-12734

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.6 before 18.4.6, 18.5 before 18.5.4, and 18.6 before 18.6.2 that could have allowed an authenticated user to, under certain conditions, render content in dialogs to other users by injecting malicious HTML content into merge request titles.

Severity
Low 3.5
Published
11 Dec 2025
Last changed
14 Oct 2026
Added to UpHeron
21 Oct 2026
Fixed in
18.4.6, 18.5.4, 18.6.2
Sources
NVD

Affected software

SoftwareAffected versions
GitLabServers and applications · cpe:a:gitlab:gitlab
  • From 15.6.0 before 18.4.6
  • From 18.5.0 before 18.5.4
  • From 18.6.0 before 18.6.2

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2025-12734
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2025-12734