Incomplete Filtering of Special Elements Affecting python3.12-test package, versions <0:3.12.13-2.amzn2023.0.1


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.06% (18th percentile)

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  • Snyk IDSNYK-AMZN2023-PYTHON312TEST-16350911
  • published3 May 2026
  • disclosed16 Mar 2026

Introduced: 16 Mar 2026

CVE-2026-3644  (opens in a new tab)
CWE-791  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 python3.12-test to version 0:3.12.13-2.amzn2023.0.1 or higher.
This issue was patched in ALAS2023-2026-1619.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3.12-test package and not the python3.12-test package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

The fix for CVE-2026-0672, which rejected control characters in http.cookies.Morsel, was incomplete. The Morsel.update(), |= operator, and unpickling paths were not patched, allowing control characters to bypass input validation. Additionally, BaseCookie.js_output() lacked the output validation applied to BaseCookie.output().

CVSS Base Scores

version 3.1