CVE-2017-17536: Phacility Phabricator

High severity, CVSS 8.8. EPSS: 2% chance of exploitation in the next 30 days.

Phabricator before 2017-11-10 does not block the --config and --debugger flags to the Mercurial hg program, which allows remote attackers to execute arbitrary code by using the web UI to browse a branch whose name begins with a --config= or --debugger= substring.

Affected products

• Phacility Phabricator: before 2017-11-10 (fixed in 2017-11-10)

Published 2017-12-11. Last modified 2026-06-17.