CVE-2020-4019: Atlassian Companion

High severity, CVSS 7.8. EPSS: 0.4% chance of exploitation in the next 30 days.

The file editing functionality in the Atlassian Companion App before version 1.0.0 allows local attackers to have the app run a different executable in place of the app's cmd.exe via a untrusted search path vulnerability.

Affected products

• Atlassian Companion: before 1.0.0 (fixed in 1.0.0)

Published 2020-06-01. Last modified 2026-06-17.