CVE-2026-43617
Published
CVSS v3
4.8
MEDIUM
CVSS v2
N/A
Affected
1
PROJECT
Description
Rsync version 3.4.2 and prior contain an authorization bypass vulnerability in the rsync daemon's hostname-based access control list enforcement when configured with chroot. Attackers can bypass hostname-based deny rules by controlling the PTR record for their source IP address, allowing connections from hostnames that administrators intended to deny when reverse DNS resolution fails and defaults to UNKNOWN.
An open source utility that provides fast incremental file transfer. It also has useful features for backup and restore operations among many other use cases.
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