# RHSA-2026:28247: Security update for 14 packages

RHSA-2026:28247, released May 27, 2026, fixes 2 CVEs across 14 products. None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2026-28247
- Platform: Linux
- Released: May 27, 2026
- Priority: High (Closes CVE-2026-4786, high severity)
- CVEs: 2, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2026:28247

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [python3.14](https://patchblox.com/security/data/product/linux/python3.14.md) | RHEL 9 | 0:3.14.5-1.el9_8 |
| [python3.14-debug](https://patchblox.com/security/data/product/linux/python3.14-debug.md) | RHEL 9 | 0:3.14.5-1.el9_8 |
| [python3.14-devel](https://patchblox.com/security/data/product/linux/python3.14-devel.md) | RHEL 9 | 0:3.14.5-1.el9_8 |
| [python3.14-freethreading](https://patchblox.com/security/data/product/linux/python3.14-freethreading.md) | RHEL 9 | 0:3.14.5-1.el9_8 |
| [python3.14-freethreading-debug](https://patchblox.com/security/data/product/linux/python3.14-freethreading-debug.md) | RHEL 9 | 0:3.14.5-1.el9_8 |
| [python3.14-freethreading-devel](https://patchblox.com/security/data/product/linux/python3.14-freethreading-devel.md) | RHEL 9 | 0:3.14.5-1.el9_8 |
| [python3.14-freethreading-idle](https://patchblox.com/security/data/product/linux/python3.14-freethreading-idle.md) | RHEL 9 | 0:3.14.5-1.el9_8 |
| [python3.14-freethreading-libs](https://patchblox.com/security/data/product/linux/python3.14-freethreading-libs.md) | RHEL 9 | 0:3.14.5-1.el9_8 |
| [python3.14-freethreading-test](https://patchblox.com/security/data/product/linux/python3.14-freethreading-test.md) | RHEL 9 | 0:3.14.5-1.el9_8 |
| [python3.14-freethreading-tkinter](https://patchblox.com/security/data/product/linux/python3.14-freethreading-tkinter.md) | RHEL 9 | 0:3.14.5-1.el9_8 |
| [python3.14-idle](https://patchblox.com/security/data/product/linux/python3.14-idle.md) | RHEL 9 | 0:3.14.5-1.el9_8 |
| [python3.14-libs](https://patchblox.com/security/data/product/linux/python3.14-libs.md) | RHEL 9 | 0:3.14.5-1.el9_8 |
| [python3.14-test](https://patchblox.com/security/data/product/linux/python3.14-test.md) | RHEL 9 | 0:3.14.5-1.el9_8 |
| [python3.14-tkinter](https://patchblox.com/security/data/product/linux/python3.14-tkinter.md) | RHEL 9 | 0:3.14.5-1.el9_8 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-4786](https://patchblox.com/security/data/cve/CVE-2026-4786.md) | High | Incomplete mitigation of CVE-2026-4519, %action expansion for command injection to webbrowser.open() | 8.1 | 0.0029 |  |
| [CVE-2026-6019](https://patchblox.com/security/data/cve/CVE-2026-6019.md) | High | BaseCookie.js_output() does not neutralize embedded characters | 7.1 | 0.0021 |  |

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Data as of 2026-11-07T12:40:37Z 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