Cross-site Scripting (XSS) Affecting python3-debuginfo package, versions <0:3.7.16-1.amzn2.0.28


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.23% (14th percentile)

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  • Snyk IDSNYK-AMZN2-PYTHON3DEBUGINFO-18060086
  • published21 Jul 2026
  • disclosed22 Apr 2026

Introduced: 22 Apr 2026

CVE-2026-6019  (opens in a new tab)
CWE-79  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 python3-debuginfo to version 0:3.7.16-1.amzn2.0.28 or higher.
This issue was patched in ALAS2-2026-3826.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3-debuginfo package and not the python3-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

http.cookies.Morsel.js_output() returns an inline <script> snippet and only escapes " for JavaScript string context. It does not neutralize the HTML parser-sensitive sequence </script> inside the generated script element. Mitigation base64-encodes the cookie value to disallow escaping using cookie value.

CVSS Base Scores

version 3.1