CVE-2025-10858: GitLab

High severity, CVSS 7.5. EPSS: 0.6% chance of exploitation in the next 30 days.

An issue was discovered in GitLab CE/EE affecting all versions before 18.2.7, 18.3 before 18.3.3, and 18.4 before 18.4.1 that allows unauthenticated users to cause a Denial of Service (DoS) condition while uploading specifically crafted large JSON files.

Affected products

• GitLab GitLab: before 18.2.7 (fixed in 18.2.7); from 18.3.0, before 18.3.3 (fixed in 18.3.3); version 18.4.0 only

Published 2025-09-26. Last modified 2026-06-17.