CVE-2025-10871: gitlab Auth Bypass (CVSS 3.8)

Description

An issue has been discovered in GitLab EE affecting all versions from 16.6 before 18.2.7, 18.3 before 18.3.3, and 18.4 before 18.4.1. Project Maintainers can exploit a vulnerability where they can assign custom roles to users with permissions exceeding their own, effectively granting themselves elevated privileges.

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CVSS v3.1 Score

3.8

LOW

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

Weakness Type (CWE)

CWE-862 Missing Authorization

Affected Products

Vendor	Product	Versions
gitlab	gitlab	16.6.0 — 18.2.7
gitlab	gitlab	16.6.0 — 18.2.7
gitlab	gitlab	18.3.0 — 18.3.3
gitlab	gitlab	18.3.0 — 18.3.3
gitlab	gitlab	All
gitlab	gitlab	All

References

Other References

https://gitlab.com/gitlab-org/gitlab/-/issues/569482

Frequently Asked Questions

What is CVE-2025-10871? +

An issue has been discovered in GitLab EE affecting all versions from 16.6 before 18.2.7, 18.3 before 18.3.3, and 18.4 before 18.4.1. Project Maintainers can exploit a vulnerability where they can assign custom roles to users with permissions exceeding their own, effectively granting themselves elevated privileges. It has a CVSS v3.1 base score of 3.8 (LOW).

How severe is CVE-2025-10871? +

CVE-2025-10871 has a CVSS v3.1 score of 3.8 out of 10, rated LOW. This is a low-severity vulnerability with limited impact.

What products are affected by CVE-2025-10871? +

CVE-2025-10871 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-2025-10871? +

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.

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