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TI-2021-17120 Aliases CVE-2021-39890GHSA-45jj-6gxc-rh25

Improper authentication in GitLab

Priority MEDIUM 44CWE-287Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-287.

Summary

It was possible to bypass 2FA for LDAP users and access some specific pages with Basic Authentication in GitLab 14.1.1 and above.

Why it matters now

EPSS 0.01197 68th percentileScored 2026-11-07
Fix Fixed GitLab (GitLab): 14.3.1, 14.2.5, 14.1.7

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
GitLabGitLab14.3 to before 14.3.1; 14.2 to before 14.2.5; 14.1.1 to before 14.1.714.3.1, 14.2.5, 14.1.7Patch availableCNA
  • GitLab VendorGitLab Affected 14.3 to before 14.3.1; 14.2 to before 14.2.5; 14.1.1 to before 14.1.7 Fixed in 14.3.1, 14.2.5, 14.1.7 Patch available CNA

CPE configurations NVD · 5

CPEVersionsRoleVendor
cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*14.1.1 to before 14.1.7; 14.2.0 to before 14.2.5VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:14.3.0:*:*:*:community:*:*:*14.3.0VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:14.3.0:*:*:*:enterprise:*:*:*14.3.0VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:14.3.1:*:*:*:community:*:*:*14.3.1VulnerableGitLab
cpe:2.3:a:gitlab:gitlab:14.3.1:*:*:*:enterprise:*:*:*14.3.1VulnerableGitLab
  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:* Versions 14.1.1 to before 14.1.7; 14.2.0 to before 14.2.5 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:14.3.0:*:*:*:community:*:*:* Versions 14.3.0 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:14.3.0:*:*:*:enterprise:*:*:* Versions 14.3.0 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:14.3.1:*:*:*:community:*:*:* Versions 14.3.1 Vulnerable ·GitLab
  • cpe:2.3:a:gitlab:gitlab:14.3.1:*:*:*:enterprise:*:*:* Versions 14.3.1 Vulnerable ·GitLab

Remediation

  • Fix · CNA GitLab (GitLab) Fixed in 14.3.1, 14.2.5, 14.1.7

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-39890
  2. 2026-10-03 Alias added: GHSA-45jj-6gxc-rh25

References

Advisory 2

  • TI-2026-71508 Integer overflow in GitLab allows code execution on the server KEVCVSS 3.1CRITICAL 10.0
  • TI-2026-58817 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in GitLab KEVCVSS 3.1CRITICAL 10.0
  • TI-2023-06425 Weak Password Recovery Mechanism for Forgotten Password in GitLab KEVCVSS 3.1CRITICAL 10.0
  • TI-2021-05191 Code injection in GitLab KEVCVSS 3.1CRITICAL 10.0
  • TI-2021-05161 Server-side request forgery in GitLab KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-02763 Injection in GitLab CVSS 3.1CRITICAL 9.9
See all 1506 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences