Behavioral Change in New Version or Environment Affecting python3.14-freethreading-test package, versions <0:3.14.8-1.amzn2023.0.1


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.73% (53rd percentile)

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  • Snyk IDSNYK-AMZN2023-PYTHON314FREETHREADINGTEST-21700670
  • published25 Oct 2026
  • disclosed18 Aug 2026

Introduced: 18 Aug 2026

CVE-2026-17084  (opens in a new tab)
CWE-439  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 python3.14-freethreading-test to version 0:3.14.8-1.amzn2023.0.1 or higher.
This issue was patched in ALAS2023-2026-3232.

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 "stringprep" module didn't process characters from RFC 3454 tables B.2 or B.3 correctly: the latest Unicode codepoint attributes were used instead of the specified Unicode 3.2.0. This behavior would cause mismatches when processing domain names using IDNA 2003 (the "idna" codec) and the in_table_b2() function of the "stringprep" module. This only affects domain names containing characters that were not previously registered or had their Unicode attributes such as case-folding behavior updated since Unicode 3.2.0.

CVSS Base Scores

version 3.1