CVE-2020-13356 Path traversal in GitLab CE/EE
An attacker can bypass multipart protection to read arbitrary files from specific server paths in GitLab.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-13356?
CVE-2020-13356 is a high-severity path traversal vulnerability in Gitlab Gitlab, published on 18 Nov 2020. 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 CE/EE affecting all versions starting from 8.8.9. A specially crafted request could bypass Multipart protection and read files in certain specific paths on the server. Affected versions are: >=8.8.9, <13.3.9,>=13.4, <13.4.5,>=13.5, <13.5.2.
Which versions are affected by CVE-2020-13356?
1 open source package ship an affected version, including gitlab. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
gitlab Bitnami | All versions | 13.5.2 |
Products include Gitlab Gitlab.
How do I fix CVE-2020-13356?
Upgrade gitlab to 13.5.2 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2020-13356 being exploited?
There is no known exploitation of CVE-2020-13356 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-2020-13356, GHSA-h32m-4g5f-5rv2.