UpHeron
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Servers and applications

CVE-2021-39887

A stored Cross-Site Scripting vulnerability in the GitLab Flavored Markdown in GitLab CE/EE version 8.4 and above allowed an attacker to execute arbitrary JavaScript code on the victim's behalf.

Severity
Medium 5.4
Published
5 Oct 2021
Last changed
17 Jun 2026
Added to UpHeron
21 Oct 2026
Fixed in
14.1.7, 14.2.5, 14.3.1
Sources
NVD

Affected software

SoftwareAffected versions
GitLabServers and applications · cpe:a:gitlab:gitlab
  • From 8.4.0 before 14.1.7
  • From 14.2 before 14.2.5
  • From 14.3 before 14.3.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-39887
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-39887