CVE-2017-18026: Debian Linux

High severity, CVSS 8.8. EPSS: 2.8% chance of exploitation in the next 30 days.

Redmine before 3.2.9, 3.3.x before 3.3.6, and 3.4.x before 3.4.4 does not block the --config and --debugger flags to the Mercurial hg program, which allows remote attackers to execute arbitrary commands (through the Mercurial adapter) via vectors involving a branch whose name begins with a --config= or --debugger= substring, a related issue to CVE-2017-17536.

Affected products

• Debian Debian Linux: version 9.0 only
• Redmine Redmine: before 3.2.9 (fixed in 3.2.9); from 3.3.0, before 3.3.6 (fixed in 3.3.6); from 3.4.0, before 3.4.4 (fixed in 3.4.4)

Published 2018-01-10. Last modified 2026-06-17.