# RHSA-2026:19064: python3.12 security update

RHSA-2026:19064, released April 10, 2026, fixes 9 CVEs in python3.12 (version 3.12.13-2.el10_2). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2026-19064
- Platform: Linux
- Released: Apr 10, 2026
- Priority: High (Closes CVE-2025-59375, high severity)
- CVEs: 9, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2026:19064

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [python3.12](https://patchblox.com/security/data/product/linux/python3.12.md) | RHEL 10 | 3.12.13-2.el10_2 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2025-59375](https://patchblox.com/security/data/cve/CVE-2025-59375.md) | High | libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing. | 8.1 | 0.0138 |  |
| [CVE-2026-4224](https://patchblox.com/security/data/cve/CVE-2026-4224.md) | High | Stack overflow parsing XML with deeply nested DTD content models | 8.1 | 0.0072 |  |
| [CVE-2025-15282](https://patchblox.com/security/data/cve/CVE-2025-15282.md) | High | Header injection via newlines in data URL mediatype | 8.1 | 0.0054 |  |
| [CVE-2026-1502](https://patchblox.com/security/data/cve/CVE-2026-1502.md) | High | HTTP client proxy tunnel headers not validated for CR/LF | 8.1 | 0.0054 |  |
| [CVE-2026-3644](https://patchblox.com/security/data/cve/CVE-2026-3644.md) | High | Incomplete control character validation in http.cookies | 8.1 | 0.0051 |  |
| [CVE-2026-0672](https://patchblox.com/security/data/cve/CVE-2026-0672.md) | High | Header injection in http.cookies.Morsel | 8.1 | 0.0048 |  |
| [CVE-2025-13837](https://patchblox.com/security/data/cve/CVE-2025-13837.md) | High | Out-of-memory when loading Plist | 8.1 | 0.0024 |  |
| [CVE-2026-2297](https://patchblox.com/security/data/cve/CVE-2026-2297.md) | High | SourcelessFileLoader does not use io.open_code() | 8.1 | 0.0022 |  |
| [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 2026-11-07T18:46:35Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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