CVE-2026-53786: Samba Rsync

Medium severity, CVSS 6.5. EPSS: 0.4% chance of exploitation in the next 30 days.

rsync before 3.5.0 contains a filter rule bypass vulnerability that allows authenticated clients to override module-level filter restrictions by supplying malicious --filter merge file directives. Attackers can inject client-side merge file directives during filter evaluation to introduce rules that supersede daemon module-level restrictions, gaining access to files the module filter was intended to exclude.

Affected products

• Samba Rsync: before 3.5.0 (fixed in 3.5.0)

Published 2026-08-13. Last modified 2026-08-31.