CVE-2021-22231 Denial of service in GitLab
An attacker can cause a denial of service on user profile pages by using a specially crafted username, affecting GitLab users.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2021-22231?
CVE-2021-22231 is a low-severity denial of service vulnerability in Gitlab Gitlab, published on 7 Jul 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
A denial of service in user's profile page is found starting with GitLab CE/EE 8.0 that allows attacker to reject access to their profile page via using a specially crafted username.
Which versions are affected by CVE-2021-22231?
1 open source package ship an affected version, including gitlab. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
gitlab Bitnami | From 8.0.0 | 13.11.6, 13.12.6, 14.0.2 |
Products include Gitlab Gitlab.
How do I fix CVE-2021-22231?
Upgrade gitlab to a fixed version for your release line: 13.11.6, 13.12.6 or 14.0.2.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2021-22231 being exploited?
There is no known exploitation of CVE-2021-22231 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-2021-22231, GHSA-9mfx-3c98-hm2f, UBUNTU-CVE-2021-22231.