CVE-2019-12439: Projectatomic Bubblewrap

High severity, CVSS 7.8. EPSS: 0.6% chance of exploitation in the next 30 days.

bubblewrap.c in Bubblewrap before 0.3.3 misuses temporary directories in /tmp as a mount point. In some particular configurations (related to XDG_RUNTIME_DIR), a local attacker may abuse this flaw to prevent other users from executing bubblewrap or potentially execute code.

Affected products

• Projectatomic Bubblewrap: before 0.3.3 (fixed in 0.3.3)

Published 2019-05-29. Last modified 2026-06-17.