Source: python-asyncssh Version: 2.23.0-1 Severity: important Tags: security upstream X-Debbugs-Cc: [email protected], Debian Security Team <[email protected]>
Hi, The following vulnerability was published for python-asyncssh. CVE-2026-54591[0]: | 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. If you fix the vulnerability please also make sure to include the CVE (Common Vulnerabilities & Exposures) id in your changelog entry. For further information see: [0] https://security-tracker.debian.org/tracker/CVE-2026-54591 https://www.cve.org/CVERecord?id=CVE-2026-54591 [1] https://github.com/ronf/asyncssh/security/advisories/GHSA-2wxc-x7rj-hg8f [2] https://github.com/ronf/asyncssh/commit/d730803b8e4e94c20c7580d90f94d1e05f9f58de Please adjust the affected versions in the BTS as needed. Regards, Salvatore
