What’s Vulnerable › Vulnerabilities

CVE-2026-90623: andreashappe cochise SSH Host Key ssh_connection.py asyncssh.connect certificate validation

• Severity: low (CVSS 3.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-14 · updated 2026-09-14
• Weakness: CWE-287

Description

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.

Affected products

• andreashappe cochise: 0.4.0, 0.4.1

References

• https://github.com/andreashappe/cochise/
• https://github.com/andreashappe/cochise/issues/13
• https://vuldb.com/cve/CVE-2026-90623
• https://vuldb.com/submit/914815
• https://vuldb.com/vuln/403205
• https://vuldb.com/vuln/403205/cti

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