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

Quick assessment

Affected
andreashappe cochise
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 andreashappe 的 cochise 软件（版本 0.4.1 及更早版本）中发现了一个安全弱点。受影响的是组件“SSH 主机密钥处理器”中，位于文件 的 函数。通过特定的操作可能导致证书验证不当。该漏洞可被远程利用，但攻击复杂度较高，且利用难度较大。该漏洞的细节已公开，可被用于攻击。项目方较早地通过问题报告获知了该问题，但截至目前尚未作出回应。

CVSS 3.7 · Low

Possible ATT&CK Techniques 2 AI

T1117 T1557 · Adversary-in-the-Middle
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I. Basic Information for CVE-2026-90623

Vulnerability Information
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Vulnerability Title
andreashappe cochise SSH Host Key ssh_connection.py asyncssh.connect certificate validation
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
证书验证不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
andreashappe cochise 0.4.0 cpe:2.3:a:andreashappe:cochise:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-90623

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III. Intelligence Information for CVE-2026-90623

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Proof of Concept for CVE-2026-90623 (2)

IV. Related Vulnerabilities

Same weakness: CWE-295

V. Comments for CVE-2026-90623

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