CVE-2021-22166 Denial of service in GitLab
An attacker can cause a denial of service in GitLab by sending an HTTP request with a malformed method, affecting Prometheus integration.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-22166?
CVE-2021-22166 is a medium-severity denial of service vulnerability in Gitlab Gitlab, published on 15 Jan 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An attacker could cause a Prometheus denial of service in GitLab 13.7+ by sending an HTTP request with a malformed method
Weakness: CWE-400
Which versions are affected by CVE-2021-22166?
1 open source package ship an affected version, including gitlab. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
gitlab Bitnami | From 13.7.0 | 13.7.2 |
Products include Gitlab Gitlab.
How do I fix CVE-2021-22166?
Upgrade gitlab to 13.7.2 or later.
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-2021-22166 being exploited?
There is no known exploitation of CVE-2021-22166 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-2021-22166, GHSA-fj94-q44p-pf8f, UBUNTU-CVE-2021-22166.