CVE-2026-54591

AsyncSSH is a Python package which provides an asynchronous client and server implementation of the SSHv2 protocol on top of the Python asyncio framework. Prior to 2.23.1, a malicious SSH server can write arbitrary files on the asyncssh SCP client's filesystem by sending filenames containing ../...

CVE-2026-54591

AsyncSSH (Python) prior to 2.23.1 is vulnerable to SCP path traversal: a malicious SSH server can craft filenames with ../, since _parse_cd_args returns server-provided names verbatim and _recv_files joins them to the destination path without enforcing directory boundaries, enabling arbitrary fil...

CVE-2026-54591

AsyncSSH is a Python package which provides an asynchronous client and server implementation of the SSHv2 protocol on top of the Python asyncio framework. Prior to 2.23.1, a malicious SSH server can write arbitrary files on the asyncssh SCP client's filesystem by sending filenames containing ../...

CVE-2026-54591 AsyncSSH: SCP Path Traversal to Arbitrary File Write

AsyncSSH is a Python package which provides an asynchronous client and server implementation of the SSHv2 protocol on top of the Python asyncio framework. Prior to 2.23.1, a malicious SSH server can write arbitrary files on the asyncssh SCP client's filesystem by sending filenames containing ../...

CVE-2026-54591

AsyncSSH is a Python package which provides an asynchronous client and server implementation of the SSHv2 protocol on top of the Python asyncio framework. Prior to 2.23.1, a malicious SSH server can write arbitrary files on the asyncssh SCP client's filesystem by sending filenames containing ../...

PT-2026-56578

Name of the Vulnerable Software and Affected Versions AsyncSSH versions prior to 2.23.1 Description AsyncSSH is a Python package providing an asynchronous client and server implementation of the SSHv2 protocol. A malicious SSH server can write arbitrary files on the SCP client's filesystem by...

CVE-2026-54591: Improper Limitation of a Pathname to a Restricted Directory

AsyncSSH is a Python package which provides an asynchronous client and server implementation of the SSHv2 protocol on top of the Python asyncio framework. Prior to 2.23.1, a malicious SSH server can write arbitrary files on the asyncssh SCP client's filesystem by sending filenames containing ../...

CVE-2026-54590: Improper Limitation of a Pathname to a Restricted Directory

AsyncSSH is a Python package which provides an asynchronous client and server implementation of the SSHv2 protocol on top of the Python asyncio framework. Version 2.23.0 contains an incomplete fix for CVE-2026-45309 in SSHServerConfig.settokens that blocks /, , and .. before %u substitution in...

PT-2026-56577

Name of the Vulnerable Software and Affected Versions AsyncSSH version 2.23.0 Description An incomplete fix in the SSHServerConfig. set tokens function fails to block leading or $ENV characters before %u substitution in the AuthorizedKeysFile. This allows subsequent expansion in expand val and...

OPENSUSE-SU-2026:11042-1 python311-asyncssh-2.23.1-1.1 on GA media

These are all security issues fixed in the python311-asyncssh-2.23.1-1.1 package on the GA media of openSUSE Tumbleweed...

GHSA-G794-3FMP-753H AsyncSSH `AuthorizedKeysFile %u` path traversal allows attacker-selected authorized keys to authenticate a traversal username

Summary AsyncSSH 2.22.0 expands the OpenSSH-compatible AuthorizedKeysFile %u token with the raw SSH username during pre-authentication server config reload. A server configured with a documented per-user key pattern such as AuthorizedKeysFile authorizedkeys/%u can be made to read an authorized-ke...

aiida-core (>=2.7.0rc0, <=2.9.2), aiida-gromacs (2.2.2) +77 more potentially affected by CVE-2026-45309 via asyncssh (>=2.0.1, <=2.22.0)

asyncssh PYPI version =2.0.1, =2.7.0rc0, =0.4.1, =0.7.2, =1.2.7, =0.0.1, =1.5.0.dev202411111555, =1.44.2, =0.6.0, =1.7.3, =1.46.0, =0.0.2, =0.3.0, =0.6.5 and more Source cves: CVE-2026-45309 Source advisory: SNYK:PYTHON-ASYNCSSH-16959998...

PT-2026-44151

Name of the Vulnerable Software and Affected Versions asyncssh versions 2.22.0 through 2.23.0 Description An issue exists during pre-authentication server configuration reload where the %u token in the AuthorizedKeysFile setting is expanded using the raw SSH username without rejecting path...

Security Bulletin: IBM Storage Ceph is vulnerable to a Rogue Session Attack and Rogue Extension Negotiation in python-asyncssh (CVE-2023-46446, CVE-2023-46445)

Summary python-asyncssh is used by IBM Storage Ceph as an asynchronous client and server implementation of the SSHv2 protocol. CVE-2023-46446, CVE-2023-46445 Vulnerability Details CVEID:CVE-2023-46446 DESCRIPTION: An issue in AsyncSSH before 2.14.1 allows attackers to control the remote end of an...

Security Bulletin: IBM Storage Ceph is vulnerable to Improper Validation of Integrity Check Value in python-asyncssh (CVE-2023-48795)

Summary python-asyncss is used by IBM Storage Ceph ias an asynchronous client and server implementation of the SSHv2 protocol. CVE-2023-48795 Vulnerability Details CVEID:CVE-2023-48795 DESCRIPTION: The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other...

EUVD-2018-0022

Malware in sbrugna...

Linux Distros Unpatched Vulnerability : CVE-2023-46446

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - An issue in AsyncSSH before 2.14.1 allows attackers to control the remote end of an SSH client session via packet injection/removal and shell emulation, aka a...

TencentOS Server 4: python-asyncssh (TSSA-2024:1054)

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2024:1054 advisory. Package updates are available for TencentOS Server 4 that fix the following vulnerabilities...

python-asyncssh: Rogue Session Attack

A flaw was found in python-synch before the 2.14.1 versions, where the client can log in to the attacker's account without the client being able to detect this. This flaw allows an attacker to control the remote end of the SSH session completely, resulting in a complete break of the confidentiali...

asyncssh SSH Man-in-the-Middle

The vulnerability of the client-side and server-side implementations of the SSHv2 asyncssh protocol in Python lies in insufficient validation of data authenticity. Exploiting this vulnerability allows a malicious actor to carry out “man-in-the-middle” attacks remotely...