CVE-2023-3920

Name: CVE-2023-3920
Creator: NVD / NIST
Published: 2023-09-29T07:15:13.777+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.38%

Last modified Jun 17, 2026

CVE-2023-3920 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. 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.. EPSS estimates a 0.38% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

4.3/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

EPSS Probability

0.38%

29.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Gitlab	Gitlab	>= 11.2, < 16.2.8
Gitlab	Gitlab	>= 16.3.0, < 16.3.5
Gitlab	Gitlab	16.4.0

References

https://gitlab.com/gitlab-org/gitlab/-/issues/417481Issue Tracking, Vendor Advisory
https://hackerone.com/reports/2058121Permissions Required
https://gitlab.com/gitlab-org/gitlab/-/issues/417481Issue Tracking, Vendor Advisory
https://hackerone.com/reports/2058121Permissions Required

Timeline

Published: Sep 29, 2023
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2023-3920?

How severe is CVE-2023-3920?

CVE-2023-3920 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.38% probability of exploitation in the next 30 days.

How do I fix CVE-2023-3920?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-3920?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST