#VU108780 Improper authentication in Gitlab Community Edition and GitLab Enterprise Edition - CVE-2025-0549

Vulnerability identifier: #VU108780

Vulnerability risk: High

CVSSv4.0: 6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2025-0549

CWE-ID: CWE-287

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Gitlab Community Edition
Universal components / Libraries / Software for developers
GitLab Enterprise Edition
Universal components / Libraries / Software for developers

Vendor: GitLab, Inc

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error in Device OAuth flow protection. A remote non-authenticated attacker can trick the victim into clicking on a specially crafted link to bypass authentication process using cross-window forgery and gain unauthorized access to the application using minimal user interaction.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 17.3.0 - 17.11.1

GitLab Enterprise Edition: 17.3.0 - 17.11.1

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External links
https://about.gitlab.com/releases/2025/05/07/patch-release-gitlab-17-11-2-released/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.