CVE-2026-53797

rsync before 3.5.0 contains a symlink race condition vulnerability in the sender's source tree traversal that allows an attacker who can manipulate a parent directory of the source tree to redirect file reads to unintended paths. Attackers can atomically replace a parent directory component with a symlink pointing outside the source root between path resolution and file open operations to disclose file contents outside the intended transfer root.

CVSS v3 4.7 MEDIUM

4.7^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.0 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

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-3jj3-qvc7-jp6x	Vendor Advisory
https://www.vulncheck.com/advisories/rsync-symlink-race-condition-information-disclosure	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 condición de carrera de symlink en el recorrido del árbol de origen del remitente que permite a un atacante que puede manipular un directorio padre del árbol de origen redirigir las lecturas de archivos a rutas no deseadas. Los atacantes pueden reemplazar atómicamente un componente de directorio padre con un symlink que apunta fuera de la raíz de origen entre la resolución de la ruta y las operaciones de apertura de archivos para divulgar el contenido de archivos fuera de la raíz de transferencia prevista.

Information

Published : 2026-08-13 15:19

Updated : 2026-10-24 16:10

NVD link : CVE-2026-53797

Mitre link : CVE-2026-53797

CVE.ORG link : CVE-2026-53797

JSON object : View

Products Affected

samba

rsync

CWE

CWE-59

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

CWE-367

Time-of-check Time-of-use (TOCTOU) Race Condition

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