User Impersonation Affecting rsync package, versions [0,]


Severity

Recommended
0.0
critical
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.47% (39th percentile)

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  • Snyk IDSNYK-CONAN-RSYNC-19427421
  • published29 Aug 2026
  • disclosed13 Aug 2026
  • creditUnknown

Introduced: 13 Aug 2026

NewCVE-2026-53791  (opens in a new tab)
CWE-290  (opens in a new tab)

How to fix?

A fix was pushed into the master branch but not yet published.

Overview

Affected versions of this package are vulnerable to User Impersonation via the PROXY protocol header. An attacker can gain unauthorized access by sending a crafted header with a forged source IP address, thereby bypassing IP-based access controls.

CVSS Base Scores

version 4.0
version 3.1