CRLF Injection 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
0.56% (43rd percentile)

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  • Snyk IDSNYK-AMZN2-PYTHONTOOLS-18523599
  • published5 Aug 2026
  • disclosed10 Apr 2026

Introduced: 10 Apr 2026

CVE-2026-1502  (opens in a new tab)
CWE-93  (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.

CR/LF bytes were not rejected by HTTP client proxy tunnel headers or host.

CVSS Base Scores

version 3.1