# Python 3.13 3.13.11

Python 3.13 3.13.11, released December 5, 2025, fixes 3 CVEs in Python 3.13 (version 3.13.11). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/windows-app/python.python.3.13-3.13.11
- Platform: Windows apps
- Released: Dec 5, 2025
- Priority: High (Closes CVE-2025-13836, high severity)
- CVEs: 3, exploited: 0, on CISA KEV: 0

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Python 3.13](https://patchblox.com/security/data/product/windows-app/python-3.13.md) |  | 3.13.11 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2025-13836](https://patchblox.com/security/data/cve/CVE-2025-13836.md) | High | Excessive read buffering DoS in http.client | 7.5 | 0.0175 |  |
| [CVE-2025-12084](https://patchblox.com/security/data/cve/CVE-2025-12084.md) | High | Quadratic complexity in node ID cache clearing | 7.5 | 0.0086 |  |
| [CVE-2025-6075](https://patchblox.com/security/data/cve/CVE-2025-6075.md) | High | Quadratic complexity in os.path.expandvars() with user-controlled template | 8.1 | 0.0015 |  |

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Data as of 2026-11-07T06:34:28Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo