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CVE-2026-90623

andreashappe cochise SSH Host Key ssh_connection.py asyncssh.connect certificate validation

CVSS 4.0 6.3 MEDIUMCVSS 3.1 3.7 LOWCVSS 3.0 3.7 LOWCVSS 2.0 2.6 Check source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-90623

Published

A weakness has been identified in andreashappe cochise up to 0.4.1. Affected is the function asyncssh.connect of the file src/cochise/ssh_connection.py of the component SSH Host Key Handler. Executing a manipulation can lead to improper certificate validation. The attack may be launched remotely. The attack requires a high level of complexity. The exploitability is told to be difficult. The exploit has been made available to the public and could be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-90623

Published

cochise

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "andreashappe",
                    "product": "cochise",
                    "versions": [
                        {
                            "version": "0.4.0",
                            "status": "affected"
                        },
                        {
                            "version": "0.4.1",
                            "status": "affected"
                        }
                    ],
                    "cpes": [
                        "cpe:2.3:a:andreashappe:cochise:*:*:*:*:*:*:*:*"
                    ],
                    "modules": [
                        "SSH Host Key Handler"
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON