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CVE-2021-4189Published

A flaw was found in Python, specifically in the FTP (File Transfer Protocol) client library in PASV (passive) mode. The issue is how the FTP client trusts the host from the PASV response by default. This flaw allows an attacker to set up a …

Exact source revision recorded 23 Oct 2026 15:48:27 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

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These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.

CVE-2021-4189 · Microsoft / collected KEV context

cve-program · CVE-2021-4189

Current operational correlations are not mixed into this historical source record. Open latest evidence to discover current connections.

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Sources read 10 Nov 04:43 UTC · 275 of 275 readable · 273 fully read · documentation 469/469 current

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