Detections
Analytics
SCA: security update for asyncssh (GHSA-g794-3fmp-753h)
high Tenable Cloud Security Plugin ID 442396
Description
There are packages installed that are affected by a vulnerability referenced in the following CVE:- 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. (CVE-2026-45309)
Solution
Update the asyncssh library and its related packages to version 2.23.0 or later.See Also
Plugin Details
Severity: High
ID: 442396
Version: Revision 1.4
Type: Local
Family: SCA Checks
Published: 5/28/2026
Updated: 7/20/2026
Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security
Risk Information
VPR
Risk Factor: Low
Score: 3
Percentile: 23.72
Vendor
Vendor Severity: Medium
CVSS v2
Risk Factor: Medium
Base Score: 5
Temporal Score: 3.7
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N
CVSS Score Source: CVE-2026-45309
CVSS v3
Risk Factor: High
Base Score: 7.5
Temporal Score: 6.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
CVSS v4
Risk Factor: High
Base Score: 8.2
Threat Score: 4.6
Threat Vector: CVSS:4.0/E:U
Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Vulnerability Information
Exploit Ease: No known exploits are available
Patch Publication Date: 5/27/2026
Vulnerability Publication Date: 5/27/2026
Reference Information
CVE: CVE-2026-45309
cwe: CWE-22