CVE-2026-53793: Rsyncproject Rsync

High severity, CVSS 7.4. EPSS: 0.4% chance of exploitation in the next 30 days.

rsync before 3.5.0 contains a path confinement bypass vulnerability that allows remote clients to escape the intended inner-module root confinement by constructing paths that resolve outside the chroot boundary when the module root contains a /./ boundary marker. Attackers can exploit improper handling of the /./ notation or forge delta-basis transfers referencing xname paths that cross the /./ boundary to gain unauthorized read or write access to files outside the module's subtree.

Affected products

• Rsyncproject Rsync: up to and including 3.4.4

Published 2026-08-13. Last modified 2026-09-08.