What’s Vulnerable › Vulnerabilities

CVE-2021-39884

• Severity: medium (CVSS 4.3 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: 2021-10-05 · updated 2026-06-17

Description

In all versions of GitLab EE since version 8.13, an endpoint discloses names of private groups that have access to a project to low privileged users that are part of that project.

Affected products

• GitLab: from 8.13.0 before 14.1.7; from 14.2.0 before 14.2.5; from 14.3.0 before 14.3.1 — fixed in 14.1.7, 14.2.5, 14.3.1

How to fix

Upgrade to a fixed version: GitLab 14.1.7, 14.2.5, 14.3.1. Check the vendor advisory for mitigations.

References

• https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39884.json
• https://gitlab.com/gitlab-org/gitlab/-/issues/25414
• https://hackerone.com/reports/447817
• https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39884.json
• https://gitlab.com/gitlab-org/gitlab/-/issues/25414
• https://hackerone.com/reports/447817

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