Improper Validation of Syntactic Correctness of Input Affecting python-tools package, versions <0:2.7.18-1.amzn2.0.22


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.19% (9th percentile)

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  • Snyk IDSNYK-AMZN2-PYTHONTOOLS-18523688
  • published5 Aug 2026
  • disclosed10 Apr 2026

Introduced: 10 Apr 2026

CVE-2026-3446  (opens in a new tab)
CWE-1286  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 python-tools to version 0:2.7.18-1.amzn2.0.22 or higher.
This issue was patched in ALAS2-2026-3845.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python-tools package and not the python-tools package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

When calling base64.b64decode() or related functions the decoding process would stop after encountering the first padded quad regardless of whether there was more information to be processed. This can lead to data being accepted which may be processed differently by other implementations. Use "validate=True" to enable stricter processing of base64 data.

CVSS Base Scores

version 3.1