CVE-2026-53786: rsync before 3.5.0 (exclusive), 0 through 3.4.4

CVE-2026-53786. CVSS 3.1 base score 6.5 (MEDIUM, Vendor/CNA). EPSS 0.00398 (percentile 0.32872), scored 22-Oct-2026.

Affected technology

rsync · before 3.5.0 (exclusive)
samba

rsync · 0 through 3.4.4
RsyncProject

Description’s affected range: before 3.5.0

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · No user interaction required

What an attacker can do

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. Vendor/CNA’s CVSS 4.0 assessment (base score 6.9/10) rates confidentiality and integrity impact as low; availability impact as none.

Published 24-Oct-2026 01:44 UTC

CWE: CWE-863
CCR priority: 26.1 /100 (P4)
CVSS 3.1: 6.5 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N · Vendor/CNA
EPSS: 0.00398 · percentile 0.32872 · 2026-10-22
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-24 01:40:49.068977+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-53786.html