CVE-2021-39905

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-11-05 · updated 2026-06-17

Description

An information disclosure vulnerability in the GitLab CE/EE API since version 8.9.6 allows a user to see basic information on private groups that a public project has been shared with

Affected products

GitLab: from 8.9.6 before 14.2.6 — fixed in 14.2.6

How to fix

Upgrade to a fixed version: GitLab 14.2.6. Check the vendor advisory for mitigations.

References

https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39905.json
https://gitlab.com/gitlab-org/gitlab/-/issues/28226
https://hackerone.com/reports/538029
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39905.json
https://gitlab.com/gitlab-org/gitlab/-/issues/28226
https://hackerone.com/reports/538029

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