CVE-2026-54591

Publié : 8 juillet 2026

Modifié : 8 juillet 2026

Score CVSS

8.1

HIGH

Description détaillée

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.

Vecteur d'attaque (CVSS)

Vecteur brut :CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H

Références et Patchs

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

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