What’s Vulnerable › Vulnerabilities

CVE-2021-39890

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-12-06 · updated 2026-06-17
• Weakness: CWE-287

Description

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

Affected products

• GitLab: from 14.1.1 before 14.1.7; from 14.2.0 before 14.2.5; 14.3.0, 14.3.1 — fixed in 14.1.7, 14.2.5

How to fix

Upgrade to a fixed version: GitLab 14.1.7, 14.2.5. Check the vendor advisory for mitigations.

References

• https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39890.json
• https://gitlab.com/gitlab-org/gitlab/-/issues/341522
• https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39890.json
• https://gitlab.com/gitlab-org/gitlab/-/issues/341522

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