What’s Vulnerable › Vulnerabilities

CVE-2018-18645

• Severity: medium (CVSS 4.3 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-12-04 · updated 2026-06-17
• Weakness: CWE-200

Description

An issue was discovered in GitLab Community and Enterprise Edition before 11.2.7, 11.3.x before 11.3.8, and 11.4.x before 11.4.3. It allows for Information Exposure via unsubscribe links in email replies.

Affected products

• GitLab: before 11.2.7; from 11.3.0 before 11.3.8; from 11.4.0 before 11.4.3 — fixed in 11.2.7, 11.3.8, 11.4.3

How to fix

Upgrade to a fixed version: GitLab 11.2.7, 11.3.8, 11.4.3. Check the vendor advisory for mitigations.

References

• https://about.gitlab.com/2018/10/29/security-release-gitlab-11-dot-4-dot-3-released/
• https://gitlab.com/gitlab-org/gitlab-ce/issues/24498
• https://about.gitlab.com/2018/10/29/security-release-gitlab-11-dot-4-dot-3-released/
• https://gitlab.com/gitlab-org/gitlab-ce/issues/24498

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