Link Following Affecting rsync package, versions <0:3.5.1-1.amzn2023.0.1


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.13% (2nd percentile)

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  • Snyk IDSNYK-AMZN2023-RSYNC-20246169
  • published29 Sept 2026
  • disclosed20 May 2026

Introduced: 20 May 2026

CVE-2026-43619  (opens in a new tab)
CWE-59  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 rsync to version 0:3.5.1-1.amzn2023.0.1 or higher.
This issue was patched in ALAS2023-2026-3131.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rsync package and not the rsync package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

Rsync version 3.4.2 and prior contain symlink race condition vulnerabilities in path-based system calls including chmod, lchown, utimes, rename, unlink, mkdir, symlink, mknod, link, rmdir, and lstat that allow local attackers to redirect operations to files outside the exported rsync module. Attackers with local filesystem access can exploit the timing window between path resolution and syscall execution by swapping symlinks to apply sender-supplied permissions, ownership, timestamps, or filenames to arbitrary files outside the intended module boundary on rsync daemons configured with 'use chroot = no'.

CVSS Base Scores

version 3.1