Cross-Site Scripting Vulnerability in GitLab CE/EE

CVE-2025-0314

What is CVE-2025-0314?

CVE-2025-0314 is a cross-site scripting (XSS) vulnerability identified in GitLab Community Edition (CE) and Enterprise Edition (EE). GitLab is a widely used DevOps platform that provides tools for version control, CI/CD, and project management among software development teams. This vulnerability allows attackers to execute malicious scripts in the context of a user's browser, potentially compromising sensitive information or enabling further attacks against the organization. Given GitLab's pivotal role in software development and collaboration, this flaw could severely undermine the security of affected installations.

Technical Details

The vulnerability arises from improper rendering of certain file types within GitLab CE/EE versions prior to 17.6.4, 17.7.3, and 17.8.1. This flaw can be exploited by injecting scripts into user-input forms or documents, which when processed by GitLab, could execute arbitrary JavaScript in the context of another user’s session. The issue is linked to the handling of these file types, making it critical for organizations to understand the technical nuances to implement appropriate safeguards.

Potential Impact of CVE-2025-0314

1. Data Exposure: An attacker could exploit the vulnerability to gain unauthorized access to sensitive user data, leading to privacy violations and potential misuse of information.

2. Account Compromise: By executing scripts in a victim's browser, attackers could hijack user sessions, allowing them to perform actions on behalf of legitimate users, which could include altering project settings or accessing confidential repositories.

3. Reputation Damage: Organizations affected by this vulnerability may suffer reputational harm, especially if the exploitation leads to public data breaches or customer exposure, eroding trust in their security protocols.

References