StackPrism

PyPI package

paramiko 2.3.0 vulnerabilities, and what to upgrade to

paramiko 2.3.0 has 4 known vulnerabilities (2 rated high or critical); 2.9.3 fixes 3 of them, and 1 has no fixed version yet. 2.9.3 has 2 known vulnerabilities of its own, so upgrade to 5.1.0, which has none.

PyPI (opens in a new tab) describes it as “SSH2 protocol library”

Known vulnerabilities
4
2 rated high or critical
Released
Sep 18, 2017
Latest is 5.1.0
Licence
LGPL-2.1
OpenSSF Scorecard
4.2/10
paramiko/paramiko (opens in a new tab)
Pulls in
6 packages
Resolved by deps.dev

What to upgrade to

5.1.0 is the closest release with no known vulnerabilities that we checked.

  • 2.9.3

    Fixes 3 of the 4 known vulnerabilities. Released Mar 18, 2022.

    2 known vulnerabilities, worst rated warning

  • 2.12.0

    Newest 2.x release. Released Nov 4, 2022.

    2 known vulnerabilities, worst rated warning

  • 5.1.0Upgrade to this

    Latest release. Released Oct 18, 2026.

    No known vulnerabilities

5.1.0 came out on Oct 18, 2026. A coding agent trained before then doesn’t know it exists, so it may suggest an older release. AI knowledge cutoff dates

Hand the fix to your coding agent

One task with the upgrade, the file to change and why. Paste it into Claude Code, Cursor or Codex.

Findings

Every advisory for paramiko 2.3.0

Known exploited first (CISA KEV), then by how likely they are to be exploited (FIRST EPSS), then by severity. Each id links to its OSV.dev record.

  1. CriticalCVE-2018-7750 on OSV.dev (opens in a new tab)GHSA-232r-66cg-79pxEPSS: top 2%

    Paramiko not properly checking authentication before processing other requests

    Fixed in 2.3.2. Published Jul 12, 2018.

  2. CriticalCVE-2018-1000805 on OSV.dev (opens in a new tab)GHSA-f2j6-wrhh-v25mEPSS: top 9%

    Paramiko Authentication Bypass vulnerability

    Fixed in 2.3.3. Published Oct 10, 2018.

  3. WarningCVE-2022-24302 on OSV.dev (opens in a new tab)GHSA-f8q4-jwww-x3wvEPSS: top 19%

    In Paramiko before 2.10.1, a race condition (between creation and chmod) in the write_private_key_file function could allow unauthorized information disclosure.

    Fixed in 2.9.3. Published Mar 17, 2022.

  4. LowCVE-2026-44405 on OSV.dev (opens in a new tab)GHSA-r374-rxx8-8654EPSS: top 99%

    Paramiko rsakey.py allows the SHA-1 algorithm

    No fixed version listed yet. Published May 6, 2026.

Is paramiko the only one?

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How this page is checked

StackPrism asks OSV.dev which advisories affect exactly paramiko 2.3.0, merges duplicates filed under several ids, and ranks them with CISA’s Known Exploited Vulnerabilities list and FIRST EPSS. Release dates and deprecation come from deps.dev and PyPI. No AI writes this page: every sentence comes from that data, refreshed every few hours.

Last checked against PyPI, OSV.dev, deps.dev, CISA KEV and FIRST EPSS.