CVE-2021-22257 Information disclosure in GitLab
Attackers can enumerate users on GitLab instances with public visibility disabled due to an unrestricted route, exposing user data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-22257?
CVE-2021-22257 is a medium-severity vulnerability in Gitlab Gitlab, published on 5 Oct 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue has been discovered in GitLab affecting all versions starting from 14.0 before 14.0.9, all versions starting from 14.1 before 14.1.4, all versions starting from 14.2 before 14.2.2. The route for /user.keys is not restricted on instances with public visibility disabled. This allows user enumeration on such instances.
Which versions are affected by CVE-2021-22257?
1 open source package ship an affected version, including gitlab. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
gitlab Bitnami | From 14.0.0 | 14.0.9, 14.1.4, 14.2.2 |
Products include Gitlab Gitlab.
How do I fix CVE-2021-22257?
Upgrade gitlab to a fixed version for your release line: 14.0.9, 14.1.4 or 14.2.2.
Is CVE-2021-22257 being exploited?
There is no known exploitation of CVE-2021-22257 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-2021-22257, GHSA-gh46-94pq-p4r3, UBUNTU-CVE-2021-22257.