CVE-2026-50558

Penelope Shell Handler is a post-exploitation shell handler for authorized security testing. Prior to 0.20.0, the Unix download() implementation in penelope.py used tar.extractall(local_download_folder) on tar archives returned by remote sessions without validating member paths, allowing a malicious or compromised session to write files outside the intended download directory and potentially overwrite ~/.penelope/peneloperc. This issue is fixed in version 0.20.0.

CVSS v3 5.9 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/brightio/penelope/commit/a040afb5db32c7e80b5e8a2f9b2164cf911cfa62
https://github.com/brightio/penelope/releases/tag/v0.20.0
https://github.com/brightio/penelope/security/advisories/GHSA-f42x-p2mx-hm8r
https://github.com/brightio/penelope/security/advisories/GHSA-f42x-p2mx-hm8r

Configurations

No configuration.

History

23 Oct 2026, 23:10

Type	Values Removed	Values Added
Summary		(es) Penelope Shell Gestor es un gestor de shell de post-explotación para pruebas de seguridad autorizadas. Antes de la versión 0.20.0, la implementación de download() de Unix en penelope.py utilizaba tar.extractall(local_download_folder) en archivos tar devueltos por sesiones remotas sin validar las rutas de los miembros, permitiendo que una sesión maliciosa o comprometida escribiera archivos fuera del directorio de descarga previsto y potencialmente sobrescribiera ~/.penelope/peneloperc. Este problema se ha corregido en la versión 0.20.0.

Information

Published : 2026-07-29 16:17

Updated : 2026-10-23 23:10

NVD link : CVE-2026-50558

Mitre link : CVE-2026-50558

CVE.ORG link : CVE-2026-50558

JSON object : View

Products Affected

No product.

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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