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CVE-2025-58068: Eventlet affected by HTTP request smuggling in unparsed trailers

August 29, 2025

The Eventlet WSGI parser is vulnerable to HTTP Request Smuggling due to improper handling of HTTP trailer sections.

This vulnerability could enable attackers to:

  • Bypass front-end security controls
  • Launch targeted attacks against active site users
  • Poison web caches

References

  • github.com/advisories/GHSA-hw6f-rjfj-j7j7
  • github.com/eventlet/eventlet
  • github.com/eventlet/eventlet/commit/0bfebd1117d392559e25b4bfbfcc941754de88fb
  • github.com/eventlet/eventlet/pull/1062
  • github.com/eventlet/eventlet/security/advisories/GHSA-hw6f-rjfj-j7j7
  • nvd.nist.gov/vuln/detail/CVE-2025-58068

Code Behaviors & Features

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Affected versions

All versions before 0.40.3

Fixed versions

  • 0.40.3

Solution

Upgrade to version 0.40.3 or above.

Weakness

  • CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

Source file

pypi/eventlet/CVE-2025-58068.yml

Spotted a mistake? Edit the file on GitLab.

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