# libssh2-1 1.8.0-1ubuntu0.1+esm1: libssh2-1 1.8.0-1ubuntu0.1+esm1 for Ubuntu 18.04.6 LTS (bionic)

libssh2-1 1.8.0-1ubuntu0.1+esm1, released July 24, 2026, fixes 4 CVEs in libssh2-1. None of them is reported as exploited. Patch Radar priority: High. The product is no longer supported.

- Web page: https://patchblox.com/security/fix/linux/ubuntu-bionic-libssh2-1-1.8.0-1ubuntu0.1-esm1
- Platform: Linux
- Released: Jul 24, 2026
- Priority: High (Closes CVE-2026-66032, high severity)
- CVEs: 4, exploited: 0, on CISA KEV: 0

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [libssh2-1](https://patchblox.com/security/data/product/linux/libssh2-1.md) | Ubuntu 18.04.6 LTS (bionic) | 1.8.0-1ubuntu0.1+esm1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-66032](https://patchblox.com/security/data/cve/CVE-2026-66032.md) | High | libssh2 Double-Free Heap Corruption via sftp_open() | 8.8 | 0.0048 |  |
| [CVE-2026-58050](https://patchblox.com/security/data/cve/CVE-2026-58050.md) | High | libssh2 - Integer Overflow in publickey Subsystem Attribute Allocation | 7.5 | 0.0044 |  |
| [CVE-2026-66034](https://patchblox.com/security/data/cve/CVE-2026-66034.md) | High | libssh2 Heap Out-of-Bounds Read via publickey subsystem | 7.5 | 0.0042 |  |
| [CVE-2026-58051](https://patchblox.com/security/data/cve/CVE-2026-58051.md) | Routine | libssh2_org: uninitialized pointer freed when malformed responses are sent by an SSH server (bsc#1269567). | n/a | 0.0029 |  |

---

Data as of 2026-11-12T13:55:20Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.