GitLab is prone to an HTML injection vulnerability.

Successful exploits will allow attacker-supplied HTML and script code to run in the context of the affected browser, potentially allowing the attacker to steal cookie-based authentication credentials or to control how the site is rendered to the user. Other attacks are also possible.

Information

Bugtraq ID: 109122

Class: Input Validation Error

CVE: CVE-2018-19493

Remote: Yes

Local: No

Published: Jul 10 2019 12:00AM

Updated: Jul 10 2019 12:00AM

Credit: James Ritchey

Vulnerable: Gitlab GitLab Enterprise Edition 11.5
Gitlab GitLab Enterprise Edition 11.4
Gitlab GitLab Enterprise Edition 11.3
Gitlab GitLab Community Edition 11.5
Gitlab GitLab Community Edition 11.4
Gitlab GitLab Community Edition 11.3

Not Vulnerable: Gitlab GitLab Enterprise Edition 11.5.1
Gitlab GitLab Enterprise Edition 11.4.8
Gitlab GitLab Enterprise Edition 11.3.11
Gitlab GitLab Community Edition 11.5.1
Gitlab GitLab Community Edition 11.4.8
Gitlab GitLab Community Edition 11.3.11

Exploit

The researcher has created a proof-of-concept to demonstrate the issue. Please see the references for more information.

Source