BaseFortify

Publication date: 2026-05-13

Last updated on: 2026-06-10

Assigner: Python Software Foundation

Description

The ftpcp() function in Lib/ftplib.py was not updated when CVE-2021-4189 was fixed. While makepasv() was patched to replace server-supplied PASV host addresses with the actual peer address (getpeername()[0]), ftpcp() still calls parse227() directly and passes the raw attacker-controllable IP address and port to target.sendport(). This patch is related to CVE-2021-4189.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-05-13

Last Modified

2026-06-10

Generated

2026-06-30

EPSS Evaluated

2026-06-28

NVD

CVE-2026-8328

Affected Vendors & Products

Currently, no data is known.

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-918	The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

Attack-Flow Graph

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