AUGUST 15, 2026
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Case File

CVE-2026-53783

HIGH · CVSS 8.1 EPSS 0.37% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-13 · Last synced 2026-08-15

CyberRota Analysis

AI-Generated

The vulnerability allows authenticated users to bypass directory restrictions in the rsync restricted shell wrapper, enabling them to exploit a time-of-check to time-of-use (TOCTOU) race condition. This can lead to unauthorized access to files outside the intended directory by substituting symlinks and using unrestricted flags. Organizations utilizing rsync versions prior to 3.5.0 should prioritize patching this vulnerability to mitigate the risk of data exposure and unauthorized file manipulation.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

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CVE
CVE-2026-53783
Severity
HIGH
CVSS
8.1
EPSS
0.37%

Original NVD Description

rsync beforeĀ 3.5.0 contains a time-of-check to time-of-use (TOCTOU) race condition vulnerability in the rrsync restricted shell wrapper that allows authenticated clients to escape enforced directory restrictions by substituting a symlink for a path component after validation but before transfer processing. Attackers can additionally leverage unrestricted flags such as --copy-unsafe-links, -D, and --log-file through rrsync to read or write files outside the permitted directory subtree.