Windows apps · Application version · April 7, 2026

Python 3.14 3.14.4

Python 3.14 3.14.4, released April 7, 2026, fixes 7 CVEs in Python 3.14. None of them is reported as exploited. Patch Radar priority: High. The latest Python 3.14 is 3.14.10, which also fixes every one of these CVEs.

High

Superseded. The latest Python 3.14 is 3.14.10, which also fixes every CVE on this page. Install that instead.

CVEs closed
7
None rated Critical
Exploited
0
None reported
Highest CVSS
8.1
Base score, 0 to 10
Highest EPSS
0.0072
54th percentile

Priority of the 7 CVEs

Patch now 0 Urgent 0 High 4 Routine 3

Applies to

ProductVersion
Python 3.143.14.4

CVEs this fix closes

PriorityCVETitleCVSSEPSSExploitation
High CVE-2026-4224 Stack overflow parsing XML with deeply nested DTD content models8.1 0.0072 None reported
High CVE-2026-3644 Incomplete control character validation in http.cookies8.1 0.0051 None reported
High CVE-2026-4519 webbrowser.open() allows leading dashes in URLs8.1 0.0032 None reported
High CVE-2026-2297 SourcelessFileLoader does not use io.open_code()8.1 0.0022 None reported
Routine CVE-2026-3479 pkgutil.get_data() does not enforce documented restrictions0.0 0.0025 None reported
Routine CVE-2026-3446 Base64 decoding stops at first padded quad by default6.0 0.0019 None reported
Routine CVE-2025-13462 tarfile: Skip DIRTYPE normalization during GNU LONGNAME/LONGLINK handling3.3 0.0017 None reported
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