CVE-2026-54591

8.1 Élevée

Publiée le 08/07/2026 à 23:16 · Modifiée le 10/07/2026 à 21:10 · Analyse NVD reportée · Source : security-advisories@github.com

Description

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 ../ traversal sequences because _parse_cd_args in scp.py returns server-provided names verbatim and _recv_files joins them to the destination path without enforcing the target directory boundary. This issue is fixed in version 2.23.1.

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Produits concernés

ronf asyncssh

Scores CVSS

Version	Score	Source	Vecteur
3.1	8.1 Élevée	security-advisories@github.com	`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H`

Faiblesses (CWE)

CWE-22

Références

https://github.com/ronf/asyncssh/commit/d730803b8e4e94c20c7580d90f94d1e05f9f58de
https://github.com/ronf/asyncssh/releases/tag/v2.23.1
https://github.com/ronf/asyncssh/security/advisories/GHSA-2wxc-x7rj-hg8f

Ailleurs

NVD
CVE.org
CIRCL Vulnerability-Lookup
CERT-FR
GitHub Advisories