CVE-2023-22524: Atlassian Companion

Critical severity, CVSS 9.8. EPSS: 24.5% chance of exploitation in the next 30 days.

Certain versions of the Atlassian Companion App for MacOS were affected by a remote code execution vulnerability. An attacker could utilize WebSockets to bypass Atlassian Companion’s blocklist and MacOS Gatekeeper to allow execution of code.

Affected products

• Atlassian Companion: from 1.0.0, before 2.0.0 (fixed in 2.0.0)

Published 2023-12-06. Last modified 2026-06-17.