CVE-2020-13306 Denial of service in GitLab
Attackers can cause denial of service in GitLab by abusing the Webhook feature due to missing rate limits.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-13306?
CVE-2020-13306 is a low-severity denial of service vulnerability in Gitlab Gitlab, published on 14 Sep 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was discovered in GitLab versions before 13.1.10, 13.2.8 and 13.3.4. GitLab Webhook feature could be abused to perform denial of service attacks due to the lack of rate limitation.
Weakness: CWE-770
Which versions are affected by CVE-2020-13306?
1 open source package ship an affected version, including gitlab. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
gitlab Bitnami | From 1.0.0 | 13.1.10, 13.2.8, 13.3.4 |
Products include Gitlab Gitlab.
How do I fix CVE-2020-13306?
Upgrade gitlab to a fixed version for your release line: 13.1.10, 13.2.8 or 13.3.4.
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-2020-13306 being exploited?
There is no known exploitation of CVE-2020-13306 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-2020-13306, GHSA-jcrh-hfqv-cr47, UBUNTU-CVE-2020-13306.