CVE-2023-6477: gitlab (CVSS 6.7)

Description

An issue has been discovered in GitLab EE affecting all versions starting from 16.5 before 16.7.6, all versions starting from 16.8 before 16.8.3, all versions starting from 16.9 before 16.9.1. When a user is assigned a custom role with admin_group_member permission, they may be able to make a group, other members or themselves Owners of that group, which may lead to privilege escalation.

Is your site exposed to CVE-2023-6477?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

6.7

MEDIUM

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

Weakness Type (CWE)

CWE-266 CWE-266

Affected Products

Vendor	Product	Versions
gitlab	gitlab	16.5.0 — 16.7.6
gitlab	gitlab	16.8.0 — 16.8.3
gitlab	gitlab	All

References

Other References

https://gitlab.com/gitlab-org/gitlab/-/issues/433463 https://hackerone.com/reports/2270898 https://gitlab.com/gitlab-org/gitlab/-/issues/433463 https://hackerone.com/reports/2270898

Frequently Asked Questions

What is CVE-2023-6477? +

An issue has been discovered in GitLab EE affecting all versions starting from 16.5 before 16.7.6, all versions starting from 16.8 before 16.8.3, all versions starting from 16.9 before 16.9.1. When a user is assigned a custom role with admin_group_member permission, they may be able to make a group, other members or themselves Owners of that group, which may lead to privilege escalation. It has a CVSS v3.1 base score of 6.7 (MEDIUM).

How severe is CVE-2023-6477? +

CVE-2023-6477 has a CVSS v3.1 score of 6.7 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2023-6477? +

CVE-2023-6477 affects products from gitlab, specifically: gitlab. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-6477? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2024-56513

Karmada is a Kubernetes management system that allows users to run cloud-native applications across multiple Kubernetes clusters and clouds. Prior …

CVE-2025-26523

This vulnerability exists in RupeeWeb trading platform due to insufficient authorization controls on certain API endpoints handling addition and deletion …

CVE-2025-0131

An incorrect privilege management vulnerability in the OPSWAT MetaDefender Endpoint Security SDK used by the Palo Alto Networks GlobalProtect™ app …

CVE-2025-48741

A Broken Access Control vulnerability in StrangeBee TheHive 5.2.0 before 5.2.16, 5.3.0 before 5.3.11, and 5.4.0 before 5.4.10 allows remote, …

CVE-2025-4228

An incorrect privilege assignment vulnerability in Palo Alto Networks Cortex® XDR Broker VM allows an authenticated administrative user to execute …

CVE-2025-0139

An incorrect privilege assignment vulnerability in Palo Alto Networks Autonomous Digital Experience Manager allows a locally authenticated low privileged user …

CVE-2023-6477