# OPENSUSE-SU-2026:21057-1: libssh2_org security update

OPENSUSE-SU-2026:21057-1, released June 25, 2026, fixes 2 CVEs in libssh2_org (version 1.11.1-160000.4.1). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/opensuse-su-2026-21057-1
- Platform: Linux
- Released: Jun 25, 2026
- Priority: High (Closes CVE-2026-55200, high severity)
- CVEs: 2, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://osv.dev/vulnerability/openSUSE-SU-2026:21057-1

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [libssh2_org](https://patchblox.com/security/data/product/linux/libssh2-org.md) | opensuse-leap 16.0 | 1.11.1-160000.4.1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-55200](https://patchblox.com/security/data/cve/CVE-2026-55200.md) | High | libssh2: libssh2 1.11.1, fixed in commit 97acf3d, contains an out-of-bounds write vulnerability in ssh2_transport_read() that... | 8.3 | 0.0388 |  |
| [CVE-2026-55199](https://patchblox.com/security/data/cve/CVE-2026-55199.md) | High | libssh2 - Pre-Authentication DoS via SSH_MSG_EXT_INFO Handler | 7.5 | 0.0092 |  |

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Data as of 2026-11-10T07:50:38Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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