UpHeron
All vulnerabilities

Servers and applications

CVE-2025-12983

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.9 before 18.3.6, 18.4 before 18.4.4, and 18.5 before 18.5.2 that could have allowed an authenticated attacker to cause a denial of service condition by submitting specially crafted markdown content with nested formatting patterns.

Severity
Medium 6.5
Published
15 Nov 2025
Last changed
19 Oct 2026
Added to UpHeron
21 Oct 2026
Fixed in
18.3.6, 18.4.4, 18.5.2
Sources
NVD

Affected software

SoftwareAffected versions
GitLabServers and applications · cpe:a:gitlab:gitlab
  • From 16.9.0 before 18.3.6
  • From 18.4.0 before 18.4.4
  • From 18.5.0 before 18.5.2

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2025-12983
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2025-12983