CVE-2023-3915

Name: CVE-2023-3915
Creator: NVD / NIST
Published: 2023-09-01T11:15:42.267+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.2/10EPSS 0.56%

Last modified Jun 17, 2026

CVE-2023-3915 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. An issue has been discovered in GitLab EE affecting all versions starting from 16.1 before 16.1.5, all versions starting from 16.2 before 16.2.5, all versions starting from 16.3 before 16.3.1. If an external user is given an owner role on any group, that external user may escalate their privileges on the instance by creating a service account in that group. EPSS estimates a 0.56% chance of exploitation in the next 30 days.

Description

An issue has been discovered in GitLab EE affecting all versions starting from 16.1 before 16.1.5, all versions starting from 16.2 before 16.2.5, all versions starting from 16.3 before 16.3.1. If an external user is given an owner role on any group, that external user may escalate their privileges on the instance by creating a service account in that group. This service account is not classified as external and may be used to access internal projects.

Metrics

CVSS 3.1

7.2/10

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

EPSS Probability

0.56%

42.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Gitlab	Gitlab	>= 16.1.0, < 16.1.5
Gitlab	Gitlab	>= 16.2, < 16.2.5
Gitlab	Gitlab	16.3.0

References

https://gitlab.com/gitlab-org/gitlab/-/issues/417664Broken Link
https://hackerone.com/reports/2040834Permissions Required
https://gitlab.com/gitlab-org/gitlab/-/issues/417664Broken Link
https://hackerone.com/reports/2040834Permissions Required

Timeline

Published: Sep 1, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-3915?

How severe is CVE-2023-3915?

CVE-2023-3915 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 0.56% probability of exploitation in the next 30 days.

How do I fix CVE-2023-3915?

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-2023-3915?

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

Scan your code now

Source: NVD / NIST