CVE-2026-53784

rsync before 3.5.0 contains a path traversal vulnerability that allows remote clients to access files outside the intended module root when use chroot is disabled and the module root path or a component of it is a symlink. The daemon calls chdir() to the module root at session initialization without resolving symlinks via realpath() or equivalent, causing subsequent relative-path operations to reference files relative to the symlink target rather than the intended module root, enabling unauthorized file access.

CVSS v3 7.1 HIGH

7.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

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-ffg2-fr5g-3rxw	Vendor Advisory
https://www.vulncheck.com/advisories/rsync-path-traversal-via-symlink-module-root	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 antes de 3.5.0 contiene una vulnerabilidad de salto de ruta que permite a clientes remotos acceder a archivos fuera de la raíz del módulo prevista cuando ’use chroot’ está deshabilitado y la ruta raíz del módulo o un componente de ella es un enlace simbólico. El demonio llama a chdir() a la raíz del módulo durante la inicialización de la sesión sin resolver enlaces simbólicos a través de realpath() o equivalente, lo que provoca que las operaciones de ruta relativa subsiguientes hagan referencia a archivos relativos al destino del enlace simbólico en lugar de la raíz del módulo prevista, lo que permite el acceso no autorizado a archivos.

Information

Published : 2026-08-13 15:19

Updated : 2026-10-24 16:10

NVD link : CVE-2026-53784

Mitre link : CVE-2026-53784

CVE.ORG link : CVE-2026-53784

JSON object : View

Products Affected

samba

rsync

CWE

CWE-59

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

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