Vulnerability · Published May 5, 2026 · Assigned by mitre
CVE-2026-44405
Low 3.4
In plain English
A low-severity broken cryptography in Paramiko from Paramiko. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 1% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)3.4Low
Exploit odds (30 days)0.1%top 98.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
In Paramiko through 4.0.0 before a448945, rsakey.py allows the SHA-1 algorithm.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | paramiko | no fix listed | DEBIAN-CVE-2026-44405 |
| Debian:13 | paramiko | no fix listed | DEBIAN-CVE-2026-44405 |
| Debian:14 | paramiko | 5.0.0-1 | DEBIAN-CVE-2026-44405 |
| PyPI | paramiko | 5.0.0 | GHSA-r374-rxx8-8654 |
| PyPI | paramiko | no fix listed | PYSEC-2026-2858 |
| Ubuntu:22.04:LTS | paramiko | no fix listed | UBUNTU-CVE-2026-44405 |
| Ubuntu:24.04:LTS | paramiko | no fix listed | UBUNTU-CVE-2026-44405 |
| Ubuntu:25.10 | paramiko | no fix listed | UBUNTU-CVE-2026-44405 |
| Ubuntu:26.04:LTS | paramiko | no fix listed | UBUNTU-CVE-2026-44405 |
| Ubuntu:26.10 | paramiko | no fix listed | UBUNTU-CVE-2026-44405 |
Affected products (as reported)
Weakness: CWE-327 · Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N