CVE-2021-31863: Debian Linux

High severity, CVSS 7.5. EPSS: 1.7% chance of exploitation in the next 30 days.

Insufficient input validation in the Git repository integration of Redmine before 4.0.9, 4.1.x before 4.1.3, and 4.2.x before 4.2.1 allows Redmine users to read arbitrary local files accessible by the application server process.

Affected products

• Debian Debian Linux: version 9.0 only
• Redmine Redmine: before 4.0.9 (fixed in 4.0.9); from 4.1.0, before 4.1.3 (fixed in 4.1.3); from 4.2.0, before 4.2.1 (fixed in 4.2.1)

Published 2021-04-28. Last modified 2026-06-17.