# RHSA-2026:67148: Security update for 3 packages

RHSA-2026:67148, released September 19, 2026, fixes 6 CVEs across 3 products. None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2026-67148
- Platform: Linux
- Released: Sep 19, 2026
- Priority: High (Closes CVE-2026-42499, high severity)
- CVEs: 6, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2026:67148

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [osbuild-composer](https://patchblox.com/security/data/product/linux/osbuild-composer.md) | RHEL 8 | 0:101.5-3.el8_10 |
| [osbuild-composer-core](https://patchblox.com/security/data/product/linux/osbuild-composer-core.md) | RHEL 8 | 0:101.5-3.el8_10 |
| [osbuild-composer-worker](https://patchblox.com/security/data/product/linux/osbuild-composer-worker.md) | RHEL 8 | 0:101.5-3.el8_10 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-42499](https://patchblox.com/security/data/cve/CVE-2026-42499.md) | High | Quadratic string concatenation in consumePhrase in net/mail | 8.8 | 0.0080 |  |
| [CVE-2026-42504](https://patchblox.com/security/data/cve/CVE-2026-42504.md) | High | Quadratic complexity in WordDecoder.DecodeHeader in mime | 8.8 | 0.0056 |  |
| [CVE-2026-55677](https://patchblox.com/security/data/cve/CVE-2026-55677.md) | High | osbuild-composer: A service for building customized OS artifacts, such as VM images and OSTree commits, that uses osbuild under the hood | 8.2 | 0.0052 |  |
| [CVE-2026-32281](https://patchblox.com/security/data/cve/CVE-2026-32281.md) | High | Inefficient policy validation in crypto/x509 | 9.1 | 0.0036 |  |
| [CVE-2026-41178](https://patchblox.com/security/data/cve/CVE-2026-41178.md) | High | opentelemetry-collector: OpenTelemetry-Go is the Go implementation of OpenTelemetry | 8.2 | 0.0034 |  |
| [CVE-2025-22866](https://patchblox.com/security/data/cve/CVE-2025-22866.md) | High | osbuild-composer: A service for building customized OS artifacts, such as VM images and OSTree commits, that uses osbuild under the hood | 7.5 | 0.0029 |  |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo