CVE-2026-50558

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 52/100
Published: 2026-07-29 Modified: 2026-10-23 First seen: 2026-10-29 Status: active

Attack Surface

Network No Auth Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: Required
S: Unchanged
C: None
I: High
A: Low

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.

Weakness Classification (1)

Bug Bounty Relevance

52 / 100
✓ Network accessible
✓ No authentication

CVSS Score

5.9 / 10.0 v3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:L

EPSS — Exploitation Probability

0.37%
Raw Score 0.003670
Percentile 30.5%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00367
2026-10-28
0.00367

Intelligence Sources

nvd ref →