CVE-2021-39903 Security feature bypass in GitLab
Privileged users can bypass instance-wide visibility restrictions via API, allowing unauthorized exposure of groups or projects.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-39903?
CVE-2021-39903 is a medium-severity vulnerability in Gitlab Gitlab, published on 4 Nov 2021. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
In all versions of GitLab CE/EE since version 13.0, a privileged user, through an API call, can change the visibility level of a group or a project to a restricted option even after the instance administrator sets that visibility option as restricted in settings.
Which versions are affected by CVE-2021-39903?
1 open source package ship an affected version, including gitlab. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
gitlab Bitnami | From 13.0.0 | 14.2.6, 14.3.4, 14.4.1 |
Products include Gitlab Gitlab.
How do I fix CVE-2021-39903?
Upgrade gitlab to a fixed version for your release line: 14.2.6, 14.3.4 or 14.4.1.
Is CVE-2021-39903 being exploited?
There is no known exploitation of CVE-2021-39903 in the wild and no public exploit code.
Other vulnerabilities in Gitlab Gitlab
- CVE-2026-97229 GitLab Community Edition and Enterprise Edition Integer Overflow or Wraparound
- CVE-2026-85706 GitLab Community Edition and Enterprise Edition Path Traversal
- CVE-2023-7028 GitLab Community and Enterprise Editions Improper Access Control
- CVE-2021-22205 GitLab Community and Enterprise Editions Remote Code Execution
- CVE-2021-39935 GitLab Community and Enterprise Editions Server-Side Request Forgery (SSRF)
Sources
Also known as BIT-gitlab-2021-39903, GHSA-p967-h43j-8p83, UBUNTU-CVE-2021-39903.