CVE-2026-53793 — rsync < 3.5.0 Path Confinement Bypass via /./ Boundary Marker in Chroot Mode
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 re…
Published: 2026-08-13 · CVSS: 9.1 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7