PARAMIKO · CVE-2026-44405 · Package
FIX → 5.0.0
Paramiko, a Python SSH library, still allows the SHA-1 hash algorithm in its RSA key handling. An attacker who can influence the signature exchange may be able to exploit SHA-1 weaknesses against connections made with it.
first public May 6, 2026 · 2 sources
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Any Python application that uses Paramiko for SSH or RSA key operations is in scope, with exposure depending on whether SHA-1 signatures can be negotiated with an untrusted peer. Applications that only use Paramiko with modern key types and trusted hosts are less exposed. unknown whether the sources give further detail on exploitation conditions.
Not affected if no-rsa-keys-used, paramiko-5-or-later
Who cares cwe-327, paramiko, python, ssh
pip show paramiko and compare it to the affected range below the fix line.paramiko to find services that use it for SSH connections.Upgrade to 5.0.0
5.0.0 or later.In Paramiko through 4.0.0 before a448945, rsakey.py allows the SHA-1 algorithm.
This page as .md · .json · CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N
GitHub Advisory Database, CC-BY 4.0 · NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.
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