CVE-2026-50558
Penelope unsafe tar extraction allows arbitrary local file write via crafted session archive
CVSS Score
5.9
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-22 |
| Vendor | brightio |
| Product | penelope |
| Published | Jul 29, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:L Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
Low
Affected Versions
brightio / penelope
< 0.20.0