CVE-2026-53795

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.

CVSS v3 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/RsyncProject/rsync/releases/tag/v3.5.0	Product Release Notes
https://github.com/RsyncProject/rsync/security/advisories/GHSA-m9vj-637x-v6pq	Vendor Advisory
https://www.vulncheck.com/advisories/rsync-arbitrary-file-write-via-temp-dir-link-dest	Release Notes Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:samba:rsync:*:*:*:*:*:*:*:*

History

23 Oct 2026, 18:10

Type	Values Removed	Values Added
Summary		(es) rsync anterior a 3.5.0 contiene una vulnerabilidad de escritura de archivos arbitraria que permite a los atacantes escribir archivos fuera del árbol de destino previsto especificando una ruta absoluta a través de las opciones --temp-dir o --link-dest. La lógica de confinamiento de renombrado es eludida cuando estas opciones se resuelven en rutas fuera del árbol de destino, permitiendo que valores controlados por el atacante escriban archivos en ubicaciones arbitrarias accesibles al proceso rsync.

Information

Published : 2026-08-13 15:19

Updated : 2026-10-24 16:10

NVD link : CVE-2026-53795

Mitre link : CVE-2026-53795

CVE.ORG link : CVE-2026-53795

JSON object : View

Products Affected

samba

rsync

CWE

CWE-59

Improper Link Resolution Before File Access ('Link Following')

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