Is CVE-2026-59996 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-59996 being exploited in the wild.

How severe is CVE-2026-59996?

Medium severity, with a CVSS score of 4.2, published 8 July 2026.

Is there a fix for CVE-2026-59996?

A patch was published on 2026-07-06: OpenSSH 10.4 released with a fix. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-59996 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-59996?

Check whether you run OpenBSD Openssh at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-59996: OpenBSD OpenSSH path traversal in scp remote-to-remote copy

CVE-2026-59996 · Severity: medium · CVSS 4.2 · Published 2026-07-08

A vulnerability in the OpenSSH scp utility could allow a malicious server to write files to unintended locations on a user's system. When a user performs a remote-to-remote file copy, a compromised server could redirect the file to a parent directory instead of the specified target. This could lead to unauthorized file placement or the overwriting of important data if a user is tricked into connecting to a malicious host.

Technologies: OpenBSD Openssh. Vendors: OpenBSD.

Quick answers

Is CVE-2026-59996 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-59996 being exploited in the wild.
How severe is CVE-2026-59996?: Medium severity, with a CVSS score of 4.2, published 8 July 2026.
Which products and versions are affected?: OpenBSD Openssh before 10.4.
Is there a fix for CVE-2026-59996?: A patch was published on 2026-07-06: OpenSSH 10.4 released with a fix. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-59996 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-59996?: Check whether you run OpenBSD Openssh at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A relative path traversal vulnerability (CWE-23) exists in the scp client of OpenSSH versions prior to 10.4. The flaw occurs during remote-to-remote file transfers where the client fails to sufficiently validate the destination path provided by the server. A malicious or compromised remote server can exploit this by sending a file that is placed in the parent directory of the intended target. Exploitation requires a user to initiate a copy between two remote destinations, one of which is controlled by the attacker. The issue is addressed in OpenSSH 10.4.

Affected products

OpenBSD OpenSSH before 10.4

Timeline

2026-07-06: patched: OpenSSH 10.4 released with a fix.
2026-07-08: advisory: CVE-2026-59996 published.

References

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