CVE-2023-3920

Public Exploit
Incorrect Authorization in GitLab

Description

An issue has been discovered in GitLab affecting all versions starting from 11.2 before 16.2.8, all versions starting from 16.3 before 16.3.5, all versions starting from 16.4 before 16.4.1. It was possible that a maintainer to create a fork relationship between existing projects contrary to the documentation.

Remediation

Solution:

  • Upgrade to version 16.4.1, 16.3.5, 16.2.8

Category

4.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.24%
Vendor Advisory gitlab.com
Affected: GitLab GitLab
Published at:
Updated at:

References

Link Tags
https://gitlab.com/gitlab-org/gitlab/-/issues/417481 vendor advisory issue tracking
https://hackerone.com/reports/2058121 broken link exploit permissions required technical description

Frequently Asked Questions

What is the severity of CVE-2023-3920?
CVE-2023-3920 has been scored as a medium severity vulnerability.
How to fix CVE-2023-3920?
To fix CVE-2023-3920: Upgrade to version 16.4.1, 16.3.5, 16.2.8
Is CVE-2023-3920 being actively exploited in the wild?
It is possible that CVE-2023-3920 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-3920?
CVE-2023-3920 affects GitLab GitLab.
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