CVE-2026-45309

Katalog CVE

CVSS 7.5 · High EPSS 0,59%

Kerentanan Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') pada asyncssh project asyncssh. Skor CVSS 3.1 7.5 (High) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

17 Juli 2026

Terakhir diubah

30 Juli 2026

Status NVD

Analyzed

CVSS 3.1

7.5 (High), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

EPSS (30 hari)

0,59% peluang dieksploitasi; lebih tinggi dari 46,8% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/ronf/asyncssh/security/advisories/GHSA-g794-3fmp-753h exploit · advisory vendor
• https://github.com/ronf/asyncssh/commit/2af2382cce946c959a378a62f257af253dc4ab51 patch
• https://github.com/ronf/asyncssh/commit/3d515ba9ba0cd9990d248bdf62bcf05d51261a88 patch