# RHSA-2026:36199: buildah security update

RHSA-2026:36199, released May 22, 2026, fixes 4 CVEs in buildah (version 1.43.1-3.el10_2). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2026-36199
- Platform: Linux
- Released: May 22, 2026
- Priority: High (Closes CVE-2026-39832, high severity)
- CVEs: 4, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2026:36199

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [buildah](https://patchblox.com/security/data/product/linux/buildah.md) | RHEL 10 | 1.43.1-3.el10_2 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-39830](https://patchblox.com/security/data/cve/CVE-2026-39830.md) | High | Invoking  client can cause server deadlock on unexpected responses in golang.org/x/crypto/ssh | 9.1 | 0.0068 |  |
| [CVE-2026-39832](https://patchblox.com/security/data/cve/CVE-2026-39832.md) | High | Invoking  agent constraints dropped when forwarding keys in golang.org/x/crypto/ssh/agent | 9.1 | 0.0068 |  |
| [CVE-2026-39835](https://patchblox.com/security/data/cve/CVE-2026-39835.md) | High | Invoking  server panic during CheckHostKey/Authenticate in golang.org/x/crypto/ssh | 8.7 | 0.0050 |  |
| [CVE-2026-39829](https://patchblox.com/security/data/cve/CVE-2026-39829.md) | High | Invoking  pathological RSA/DSA parameters may cause DoS in golang.org/x/crypto/ssh | 8.7 | 0.0047 |  |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo