apache/airflow

Remove/Replace DSSKey references from Airflow

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#54,079 opened on Aug 4, 2025

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 (8 comments) (3 reactions) (1 assignee)Python (44,809 stars) (16,781 forks)batch import
area:providersgood first issuekind:metaprovider:sftpprovider:ssh

Description

Body

As seen from: https://github.com/apache/airflow/pull/54078, which is a short term fix to workaround DSSKey

  1. Remove DSSKey references entirely in the codebase
  2. Bump minimum to paramiko 4.0+
  3. Provide migration guide for users with DSA keys
  4. Bump types-paramiko version that was limited in https://github.com/apache/airflow/pull/54173

Migration that could be required:

Users would need to: Generate other keys to be used in their connections (RSA, ECDSA, or Ed25519 keys) and update their Airflow connections to use those

Committer

  • I acknowledge that I am a maintainer/committer of the Apache Airflow project.

Contributor guide

Tech stack
python
Domain
backendsecurity
Issue type
refactor
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
blocked
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
SSH key typesAirflow SSH connectionsPython dependency managementParamiko basics
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
35
Research direction
First, review linked PRs #54078 and #54173 to understand the short term fix and the limitations set on types paramiko. Then, search the entire Airflow codebase for any remaining references to DSSKey or DSA keys, particularly in SSH connection handling and documentation. Focus on files related to paramiko usage and key validation. Finally, plan the removal of these references, the bump of paramiko to >=4.0, and the update of types paramiko version, ensuring to provide a migration guide for users with existing DSA keys.
Remove/Replace DSSKey references from Airflow · apache/airflow#54079 | Good First Issue