Bug 2498244 (CVE-2026-54591) - CVE-2026-54591 asyncssh: AsyncSSH: Arbitrary file write via path traversal in SCP client
Summary: CVE-2026-54591 asyncssh: AsyncSSH: Arbitrary file write via path traversal in...
Keywords:
Status: NEW
Alias: CVE-2026-54591
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
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Depends On: 2498487 2498488
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-08 21:01 UTC by OSIDB Bzimport
Modified: 2026-07-09 12:42 UTC (History)
4 users (show)

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Description OSIDB Bzimport 2026-07-08 21:01:26 UTC 
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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