# RHSA-2026:66392: apr-util security update

RHSA-2026:66392, released August 6, 2026, fixes 4 CVEs in apr-util (version 1.6.3-23.el10_2.1). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2026-66392
- Platform: Linux
- Released: Aug 6, 2026
- Priority: High (Closes CVE-2026-34502, high severity)
- CVEs: 4, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2026:66392

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [apr-util](https://patchblox.com/security/data/product/linux/apr-util.md) | RHEL 10 | 1.6.3-23.el10_2.1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-34501](https://patchblox.com/security/data/cve/CVE-2026-34501.md) | High | Apache Portable Runtime Utility: Heap buffer overflow in APR redis client | 7.5 | 0.0051 |  |
| [CVE-2026-34502](https://patchblox.com/security/data/cve/CVE-2026-34502.md) | High | Apache Portable Runtime Utility: Heap buffer overflow in APR memcached client | 7.5 | 0.0051 |  |
| [CVE-2026-32327](https://patchblox.com/security/data/cve/CVE-2026-32327.md) | High | Apache Portable Runtime Utility: apr-util XML stack recursion crash | 9.1 | 0.0046 |  |
| [CVE-2025-49506](https://patchblox.com/security/data/cve/CVE-2025-49506.md) | High | Apache Portable Runtime Utility: apr_password_validate() vulnerable to timing attack | 7.5 | 0.0038 |  |

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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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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