This page tracks the Ubuntu fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-53786 →

UBUNTU-CVE-2026-53786

rsync before 3.5.0 contains a filter rule bypass vulnerability that allows authenticated clients to override module-level filter restrictions by suppl...

Original description

The description as published by the source.

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.

Source: OSV.dev (Open Source Vulnerabilities) OSV