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CVE-2026-8328 Affecting python3.14-freethreading-test package, versions <0:3.14.6-1.amzn2023.0.1

Severity

 Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.46% (38th percentile)

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  • Snyk IDSNYK-AMZN2023-PYTHON314FREETHREADINGTEST-17889574
  • published8 Jul 2026
  • disclosed13 May 2026
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Introduced: 13 May 2026

CVE-2026-8328  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 python3.14-freethreading-test to version 0:3.14.6-1.amzn2023.0.1 or higher.
This issue was patched in ALAS2023-2026-1929.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3.14-freethreading-test package and not the python3.14-freethreading-test package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

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.