# CVE-2026-90623

## Summary

- **CVE ID:** CVE-2026-90623
- **Severity:** MEDIUM
- **CVSS Score:** 6.3 (CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P)
- **CWE:** CWE-295, CWE-287
- **Published:** Sep 14, 2026
- **Last Modified:** Sep 14, 2026

## 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)
- andreashappe — cochise (0.4.1)

## References

- [CNA](https://vuldb.com/vuln/403205)
- [CNA](https://vuldb.com/vuln/403205/cti)
- [CNA](https://vuldb.com/cve/CVE-2026-90623)
- [CNA](https://vuldb.com/submit/914815)
- [CNA](https://github.com/andreashappe/cochise/issues/13)
- [CNA](https://github.com/andreashappe/cochise/)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.26%
- **EPSS Percentile:** 18.7

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-19._