# Python 3.14 3.14.8

Python 3.14 3.14.8, released September 30, 2026, fixes 5 CVEs in Python 3.14 (version 3.14.8). None of them is reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/fix/windows-app/python.python.3.14-3.14.8
- Platform: Windows apps
- Released: Sep 30, 2026
- Priority: Urgent (Closes CVE-2026-19445, rated Critical)
- CVEs: 5, exploited: 0, on CISA KEV: 0

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Python 3.14](https://patchblox.com/security/data/product/windows-app/python-3.14.md) |  | 3.14.8 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-19445](https://patchblox.com/security/data/cve/CVE-2026-19445.md) | Urgent | Use-after-free of a server-side SSLContext when sni_callback switches contexts | 9.2 | 0.0052 |  |
| [CVE-2026-19553](https://patchblox.com/security/data/cve/CVE-2026-19553.md) | High | SSLContext.wrap_bio() missing validation of server_hostname parameter | 7.6 | 0.0055 |  |
| [CVE-2026-17084](https://patchblox.com/security/data/cve/CVE-2026-17084.md) | Routine | stringprep.map_table_b2() deviates from RFC 3454 Table B.2 | 6.0 | 0.0073 |  |
| [CVE-2026-15806](https://patchblox.com/security/data/cve/CVE-2026-15806.md) | Routine | `HTTPPasswordMgr` can send saved HTTPS credentials via HTTP because of incorrect scheme matching | 6.0 | 0.0053 |  |
| [CVE-2026-15310](https://patchblox.com/security/data/cve/CVE-2026-15310.md) | Routine | zipfile: bzip2/LZMA/Zstandard members decompress without a max_length bound, defeating chunked-read memory limits | 2.1 | 0.0053 |  |

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Data as of 2026-11-07T00:32:44Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo