CVE-2026-53793

rsync before 3.5.0 contains a path confinement bypass vulnerability that allows remote clients to escape the intended inner-module root confinement by constructing paths that resolve outside the chroot boundary when the module root contains a /./ boundary marker. Attackers can exploit improper handling of the /./ notation or forge delta-basis transfers referencing xname paths that cross the /./ boundary to gain unauthorized read or write access to files outside the module's subtree.

CVSS v3 7.4 HIGH

7.4^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.2 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

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
https://github.com/RsyncProject/rsync/security/advisories/GHSA-wj7w-vh23-mm44
https://www.vulncheck.com/advisories/rsync-path-confinement-bypass-via-boundary-marker-in-chroot-mode

Configurations

No configuration.

History

23 Oct 2026, 18:10

Type	Values Removed	Values Added
Summary		(es) rsync anterior a la versión 3.5.0 contiene una vulnerabilidad de omisión de confinamiento de ruta que permite a clientes remotos escapar del confinamiento de raíz de módulo interno previsto construyendo rutas que se resuelven fuera del límite del chroot cuando la raíz del módulo contiene un marcador de límite /./. Los atacantes pueden explotar el manejo inadecuado de la notación /./ o falsificar transferencias basadas en delta que hacen referencia a rutas xname que cruzan el límite /./ para obtener acceso de lectura o escritura no autorizado a archivos fuera del subárbol del módulo.

Information

Published : 2026-08-13 15:19

Updated : 2026-10-24 16:10

NVD link : CVE-2026-53793

Mitre link : CVE-2026-53793

CVE.ORG link : CVE-2026-53793

JSON object : View

Products Affected

No product.

CWE

CWE-59

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

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