DEBIAN-CVE-2026-45309
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-45309
- Import Source
- https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-45309.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2026-45309
- Upstream
- Published
- 2026-07-17T19:17:14Z
- Modified
- 2026-09-01T16:06:45Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/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. Prior to 2.23.0, AsyncSSH expands the OpenSSH-compatible AuthorizedKeysFile %u token in asyncssh/config.py, asyncssh/connection.py, asyncssh/auth_keys.py, and asyncssh/misc.py with the raw SSH username during pre-authentication server config reload, allowing a server configured with AuthorizedKeysFile authorized_keys/%u to read an authorized-keys file outside the intended directory when the SSH username contains /, , or .. path traversal segments and authenticate with an attacker-selected key file. This issue is fixed in version 2.23.0.
- References
Affected packages
Debian:12 / python-asyncssh
Package
- Name
- python-asyncssh
- Purl
- pkg:deb/debian/python-asyncssh?arch=source&distro=bookworm
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Debian:13 / python-asyncssh
Package
- Name
- python-asyncssh
- Purl
- pkg:deb/debian/python-asyncssh?arch=source&distro=trixie
Debian:14 / python-asyncssh
Package
- Name
- python-asyncssh
- Purl
- pkg:deb/debian/python-asyncssh?arch=source&distro=forky