CVE-2026-53790: rsync 0 through 3.4.4

CVE-2026-53790. CVSS 3.1 base score 8.1 (HIGH, Vendor/CNA). EPSS 0.00629 (percentile 0.49466), scored 22-Oct-2026.

Affected technology

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 shell metacharacters or newline characters into unsanitized user-supplied values such as hostnames and hostspecs to execute arbitrary commands under the privileges of the rsync process or the invoking user. Vendor/CNA’s CVSS 4.0 assessment (base score 9.2/10) rates confidentiality, integrity and availability impact as high.

Published 24-Oct-2026 01:43 UTC

CWE: CWE-78, CWE-88
CCR priority: 32.6 /100 (P4)
CVSS 3.1: 8.1 /10 · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H · Vendor/CNA
EPSS: 0.00629 · percentile 0.49466 · 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-2026-53790.html