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CentOS Linux 7 [TuxCare] Security Update: rsync Multiple Vulnerabilities (CENTOS7:CLSA-2026:1791386404)

high Nessus Plugin ID 368044

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Synopsis

The CentOS Linux host is missing one or more security updates.

Description

The CentOS Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the TuxCare CENTOS7:CLSA-2026:1791386404 advisory.

 - rsync before 3.5.0 contains an arbitrary file write vulnerability that allows attackers to write files outside the intended destination tree by specifying an absolute path via --temp-dir or --link-dest options. The rename-confinement logic is bypassed when these options resolve to paths outside the destination tree, enabling attacker-controlled values to write files to arbitrary locations accessible to the rsync process. (CVE-2026-53795)

 - rsync before 3.5.0 contains an arbitrary file read vulnerability that allows attackers to read files accessible to the rsync daemon process by exploiting symlink following in input configuration file handling including --files-from, --password-file, and filter merge files. Attackers can place a symlink at a predictable --files-from or --password-file path, or supply a --files-from path that escapes the daemon module root, to read arbitrary files accessible to the rsync process. (CVE-2026-53802)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected rsync package based on the guidance in TuxCare advisory CENTOS7:CLSA-2026:1791386404.

See Also

https://cve.tuxcare.com/els/releases/CLSA-2026:1791386404

http://www.nessus.org/u?9bd863a3

Plugin Details

Severity: High

ID: 368044

File Name: tuxcare_centos_7_CLSA-2026-1791386404.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 10/20/2026

Updated: 10/20/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.51

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:C/A:C

CVSS Score Source: CVE-2026-53795

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: High

Base Score: 8.4

Threat Score: 5.8

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

CVSS Score Source: CVE-2026-53802

Vulnerability Information

Required KB Items: Host/local_checks_enabled, Host/CentOS/release, Host/CentOS/rpm-list, Host/OS/extended-third-party

Exploit Ease: No known exploits are available

Patch Publication Date: 10/7/2026

Vulnerability Publication Date: 8/13/2026

Reference Information

CVE: CVE-2026-53795, CVE-2026-53802

CLSA: 2026:1791386404