CVE-2020-26413 : Security Advisory and Response

An issue has been discovered in GitLab CE/EE affecting versions starting from 13.4 before 13.6.2, leading to information disclosure via GraphQL.

Understanding CVE-2020-26413

This CVE involves an information exposure vulnerability in GitLab CE/EE versions.

What is CVE-2020-26413?

CVE-2020-26413 is a vulnerability in GitLab CE/EE versions that allows user email information to be unexpectedly visible due to an issue in GraphQL.

The Impact of CVE-2020-26413

The impact of this vulnerability is rated as MEDIUM with a CVSS base score of 5.3. It affects confidentiality with low impact and requires no special privileges for exploitation.

Technical Details of CVE-2020-26413

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability in GitLab CE/EE versions allows for information disclosure through GraphQL, making user email addresses visible.

Affected Systems and Versions

Product: GitLab CE/EE
Versions: >=13.4, <13.4.7; >=13.5, <13.5.5; >=13.6, <13.6.2

Exploitation Mechanism

The vulnerability can be exploited remotely with low complexity, requiring no user interaction.

Mitigation and Prevention

Protect your systems from CVE-2020-26413 with these steps.

Immediate Steps to Take

Upgrade GitLab CE/EE to version 13.6.2 or higher.
Monitor user email exposure and access logs for unusual activity.
Implement network security measures to restrict unauthorized access.

Long-Term Security Practices

Regularly update and patch GitLab CE/EE to the latest versions.
Conduct security audits and penetration testing to identify vulnerabilities.

Patching and Updates

Apply security patches provided by GitLab promptly to address this vulnerability.