CVE-2026-90623CWE-287CWE-295

CVE-2026-90623

Low · published September 14, 2026

CVSS v3.1
3.7
EPSS
0%
Percentile
19.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
3.7 · LOW
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS v4.0
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
EPSS
0.00276 · 19.0th percentile
Weaknesses
CWE-287 · Improper Authentication; CWE-295 · Improper Certificate Validation
Published
2026-09-14T08:16Z
References (6)
EPSS history
Timeline
  • 15 SEP 03:22Z
    EPSS moved — → 0%
    epss
  • 14 SEP 03:45Z
    andreashappe cochise SSH Host Key ssh_connection.py asyncssh.connect certificate validation
    cvelistv5