Vulnerability Database

308,681

Total vulnerabilities in the database

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.

  • Published: Oct 5, 2021
  • Updated: Nov 16, 2025
  • CVE: CVE-2021-39887
  • Severity: High
  • Exploit:

CVSS v3:

  • Severity: High
  • Score: 7.3
  • AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

CVSS v2:

  • Severity: Low
  • Score: 3.5
  • AV:N/AC:M/Au:S/C:N/I:P/A:N

CWEs:

OWASP TOP 10:

Software From Fixed in
gitlab / gitlab 14.3 14.3.1
gitlab / gitlab 14.2 14.2.5
gitlab / gitlab 8.4.0 14.1.7