DEBIAN-CVE-2026-54590
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-54590
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54590.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-54590
- Upstream
- Published
- 2026-07-08T21:16:49Z
- Modified
- 2026-09-14T17:03:19Z
- Severity
-
- 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
- Summary
- [none]
- Details
-
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._set_tokens that blocks /, , and .. before %u substitution in AuthorizedKeysFile but does not block a leading ~ or ${ENV}, allowing later expansion in _expand_val and Path(filename).expanduser() to escape the intended authorized-keys directory. This issue is fixed in version 2.23.1.
- References
Affected packages
Debian:14 / python-asyncssh
Package
- Name
- python-asyncssh
- Purl
- pkg:deb/debian/python-asyncssh?arch=source&distro=forky