CVE-2026-50558

Published: Jul 29, 2026Modified: Oct 23, 2026Deferred

5.9

Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:L

Exploitability: 1.6 / Impact: 4.2

Source: security-advisories@github.com (Secondary)

Description

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.

Related CWEs

CWE-22

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

The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

References (4)

https://github.com/brightio/penelope/commit/a040afb5db32c7e80b5e8a2f9b2164cf911cfa62

Source: security-advisories@github.com

https://github.com/brightio/penelope/releases/tag/v0.20.0

Source: security-advisories@github.com

https://github.com/brightio/penelope/security/advisories/GHSA-f42x-p2mx-hm8r

Source: security-advisories@github.com

https://github.com/brightio/penelope/security/advisories/GHSA-f42x-p2mx-hm8r

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Timeline

No history available yet.