---
id: requests-credssp
version: "2.0.0"
license: MIT
license_treatment: permissive
maintenance: abandoned
---

# requests-credssp — HTTPS CredSSP authentication with the requests library.

License: permissive · Maintenance: abandoned · Downloads: 314.9K/mo

## What it is and what it does

requests-credssp extends the requests library to authenticate against Windows servers using the CredSSP protocol, which combines TLS encryption with SPNEGO-negotiated credentials (NTLM or Kerberos). It enables double-hop authentication, allowing your credentials to be delegated to a remote server. The package supports CredSSP protocol versions 2 through 6 and provides message encryption via wrap/unwrap functions for secure token exchange.

Out of the box, it handles NTLM authentication on any platform. Kerberos support requires optional system dependencies and additional configuration on Unix-like systems. The library exposes configuration options for authentication mechanism selection, TLS version constraints, and minimum CredSSP protocol version enforcement—useful for working around compatibility issues with older Windows hosts or enforcing security patches.

Use it for:

- Authenticate requests to WinRM endpoints on Windows servers using domain credentials.
- Build Python tools that interact with Windows-only APIs or services requiring CredSSP.
- Implement credential delegation for multi-hop scenarios where a server must forward credentials to another system.
- Encrypt messages sent over CredSSP-authenticated TLS channels for additional protocol-level security.
- Enforce minimum CredSSP protocol versions to reject unpatched servers vulnerable to CVE-2018-0886.

## Worth the install?

AI-flagged interpretation of the facts above — verify before relying.

Adds CredSSP authentication support to the requests library, enabling HTTPS requests to Windows servers using NTLM or Kerberos credentials with credential delegation.

No—the package is abandoned (last release February 2022, last commit May 2023) with no active maintenance or security updates. While it has low install friction and permissive licensing, the lack of ongoing support poses a risk for production use, especially for security-sensitive authentication. Consider only if you are maintaining legacy code with no alternative and can accept the security and compatibility risks.

## Install

pip install requests-credssp
uv add requests-credssp
poetry add requests-credssp

## Installing requests-credssp

Before you install: Low install friction with three straightforward dependencies. However, the package is abandoned—last release was 2022-02-21 and last commit 2023-05-31—so no active maintenance or security updates are forthcoming.

License in practice: MIT license is permissive, allowing commercial and private use with minimal restrictions.

Quickstart:

pip install requests-credssp

import requests
from requests_credssp import HttpCredSSPAuth

credssp_auth = HttpCredSSPAuth('domain\\user', 'password')
r = requests.get('https://server:5986/wsman', auth=credssp_auth)

Requires Python 3.6+. Kerberos support on Unix requires system Kerberos headers and python-gssapi; install with requests-credssp[kerberos].

Verify before relying:

- Whether the package remains compatible with current versions of cryptography, pyspnego, and requests given its abandoned status.
- Whether CredSSP protocol versions 5 and 6 (CVE-2018-0886 mitigations) remain secure against current threat models.
- Real-world compatibility with modern Windows Server versions and whether TLSv1.2 disabling is still necessary.

## Package facts

- License: MIT (permissive)
- Python support: supports_current
- Install friction: low
- Maintenance: abandoned
- Downloads: 314.9K/month (top 15,000 on PyPI)
- Known vulnerabilities: none known

## Tags

credssp authentication requests, windows ntlm kerberos auth, double hop authentication, winrm https requests, microsoft credential delegation, spnego negotiate auth, requests library windows auth, windows-auth, credssp-protocol, abandoned

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