Improper Encoding or Escaping of Output Affecting python3.14-freethreading-debug package, versions <0:3.14.5-1.el10_2


Severity

Recommended
high

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.21% (11th percentile)

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  • Snyk IDSNYK-ALMALINUX10-PYTHON314FREETHREADINGDEBUG-17458759
  • published25 Jun 2026
  • disclosed23 Jun 2026

Introduced: 23 Jun 2026

CVE-2026-6019  (opens in a new tab)
CWE-116  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:10 python3.14-freethreading-debug to version 0:3.14.5-1.el10_2 or higher.
This issue was patched in ALSA-2026:28581.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3.14-freethreading-debug package and not the python3.14-freethreading-debug package as distributed by AlmaLinux. See How to fix? for AlmaLinux:10 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