In Paramiko through 4.0.0 before a448945, rsakey.py allows the SHA-1 algorithm.
Priority LOW 15CWE-327Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- Partial Red Hat: 13 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-327.
Summary
In Paramiko through 4.0.0 before a448945, rsakey.py allows the SHA-1 algorithm.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00114 1st percentileScored 2026-11-07
Fix Partial paramiko (PyPI): 5.0.0Red Hat: 13 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | paramiko (PyPI) | before 5.0.0 | 5.0.0 | Patch available | GHSA-r374-rxx8-8654 |
- paramiko (PyPI) Vendor— Affected before 5.0.0 Fixed in 5.0.0 Patch available GHSA-r374-rxx8-8654
Remediation
- Fix · GHSA-r374-rxx8-8654 paramiko (PyPI) Fixed in 5.0.0 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Migration Toolkit for Containers | Affected | No fix yet: Fix deferred |
| Red Hat Ansible Automation Platform 2 | Affected | No fix yet: Fix deferred |
| Red Hat Ansible Automation Platform Ansible Core 2 | Affected | No fix yet: Fix deferred |
| Red Hat Discovery 2 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 6 | Affected | — |
| Red Hat Enterprise Linux 7 | Affected | — |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift AI (RHOAI) | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet: Fix deferred |
| Red Hat OpenStack Platform 16.2 | Affected | — |
| Red Hat OpenStack Platform 17.1 | Affected | — |
| Red Hat OpenStack Platform 18.0 | Affected | No fix yet: Fix deferred |
| Red Hat Satellite 6 | Affected | No fix yet: Fix deferred |
Not affected: 1 product
- Red Hat Hardened Images
Timeline
- 2026-10-02 Threatist record created from CVE-2026-44405
- 2026-10-03 Alias added: GHSA-r374-rxx8-8654
- 2026-11-07 Fix available: PyPI/[email protected] · GHSA-r374-rxx8-8654
- 2026-11-07 3 new references · GHSA-r374-rxx8-8654
References
Advisory 2
Other 5
- 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
- https://github.com/paramiko/paramiko
- https://github.com/pypa/advisory-database/tree/main/vulns/paramiko/PYSEC-2026-2858.yaml
- https://pypi.org/project/paramiko
More Paramiko vulnerabilities
- TI-2023-26623 The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6… CVSS 3.1MEDIUM 5.9
- TI-2018-05593 transport.py in the SSH server implementation of Paramiko before 1.17.6, 1.18.x before… CVSS 3.1CRITICAL 9.8
- TI-2018-16030 Paramiko version 2.4.1, 2.3.2, 2.2.3, 2.1.5, 2.0.8, 1.18.5, 1.17.6 contains a Incorrect… CVSS 3.1HIGH 8.8
- TI-2022-08183 In Paramiko before 2.10.1, a race condition (between creation and chmod) in the… CVSS 3.1MEDIUM 5.9
Sources
- CVE-2026-44405 · CVE Program
- CVE-2026-44405 · NVD
- FIRST EPSS
- GHSA-r374-rxx8-8654 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-44405 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences