Detections
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Fedora 43 : python-asyncssh (2026-574496d9ae)

high Nessus Plugin ID 327895

Synopsis

The remote Fedora host is missing one or more security updates.

Description

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-574496d9ae advisory.

 import asyncssh 2.23.1 Fix CVE-2026-54590: Unauthorized file modification via authorized-keys directory escape Fix CVE-2026-54591: Arbitrary file write via path traversal in SCP client

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected python-asyncssh package.

See Also

https://bodhi.fedoraproject.org/updates/FEDORA-2026-574496d9ae

Plugin Details

Severity: High

ID: 327895

File Name: fedora_2026-574496d9ae.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 7/19/2026

Updated: 7/19/2026

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.68

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:C/A:C

CVSS Score Source: CVE-2026-54591

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:fedoraproject:fedora:python-asyncssh, cpe:/o:fedoraproject:fedora:43

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 7/11/2026

Vulnerability Publication Date: 7/8/2026

Reference Information

CVE: CVE-2026-54590, CVE-2026-54591