CVE-2023-0838 Information disclosure in GitLab
A maintainer can leak masked webhook secrets by modifying the webhook URL, exposing sensitive credentials in GitLab.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-0838?
CVE-2023-0838 is a medium-severity vulnerability in Gitlab Gitlab, published on 5 Apr 2023. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
An issue has been discovered in GitLab affecting versions starting from 15.1 before 15.8.5, 15.9 before 15.9.4, and 15.10 before 15.10.1. A maintainer could modify a webhook URL to leak masked webhook secrets by adding a new parameter to the url. This addresses an incomplete fix for CVE-2022-4342.
Weakness: CWE-200
Which versions are affected by CVE-2023-0838?
1 open source package ship an affected version, including gitlab. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
gitlab Bitnami | From 15.1.0 | 15.8.5, 15.9.4, 15.10.1 |
Products include Gitlab Gitlab.
How do I fix CVE-2023-0838?
Upgrade gitlab to a fixed version for your release line: 15.8.5, 15.9.4 or 15.10.1.
Is CVE-2023-0838 being exploited?
There is no known exploitation of CVE-2023-0838 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-2023-0838, GHSA-xg8m-4qxg-vm4m, UBUNTU-CVE-2023-0838.