CVE-2026-54590

Katalog CVE

CVSS 5.9 · Medium EPSS 0,39%

Kerentanan Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'). Skor CVSS 3.1 5.9 (Medium) menurut github.com.

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. 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.

Rincian

Terbit di NVD

8 Juli 2026

Terakhir diubah

10 Juli 2026

Status NVD

Deferred

CVSS 3.1

5.9 (Medium), sumber github.com
CVSS:3.1/AV:N/AC:H/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')
CWE-639: Authorization Bypass Through User-Controlled Key

EPSS (30 hari)

0,39% peluang dieksploitasi; lebih tinggi dari 31,6% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://github.com/ronf/asyncssh/commit/3d515ba9ba0cd9990d248bdf62bcf05d51261a88
• https://github.com/ronf/asyncssh/releases/tag/v2.23.1
• https://github.com/ronf/asyncssh/security/advisories/GHSA-qr67-gv47-xwwh