CVE-2018-17452: GitLab

Critical severity, CVSS 9.8. EPSS: 0.7% chance of exploitation in the next 30 days.

An issue was discovered in GitLab Community and Enterprise Edition before 11.1.7, 11.2.x before 11.2.4, and 11.3.x before 11.3.1. There is Server-Side Request Forgery (SSRF) via a loopback address to the validate_localhost function in url_blocker.rb.

Affected products

• GitLab GitLab: before 11.1.7 (fixed in 11.1.7); from 11.2.0, before 11.2.4 (fixed in 11.2.4); version 11.3.0 only

Published 2023-04-15. Last modified 2026-06-17.