Home/CVE/In Paramiko through 4.0.0 before a448945, rsakey.py allows the SHA-1 algorithm.
CVE

CVE-2026-44405

In Paramiko through 4.0.0 before a448945, rsakey.py allows the SHA-1 algorithm.

In Paramiko through 4.0.0 before a448945, rsakey.py allows the SHA-1 algorithm.

LOW · CVSS 3.4 EPSS 4e-05
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-327Use of a Broken or Risky Cryptographic Algorithm
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
PyPI paramiko LOW
▣

Scoring & Timeline

3.4
LOW · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD06 May 2026 · 12:16 AM
CVSS VectorCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/paramiko/paramiko/commit/a4489456b6f65281e172380cc4826cee5e851dbb
https://ostif.org/wp-content/uploads/2026/05/25-11-2415-REP_paramiko-security-audit_v1.1.pdf
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