CVE-2018-1000164: Debian Linux

High severity, CVSS 7.5. EPSS: 2.4% chance of exploitation in the next 30 days.

gunicorn version 19.4.5 contains a CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers vulnerability in "process_headers" function in "gunicorn/http/wsgi.py" that can result in an attacker causing the server to return arbitrary HTTP headers. This vulnerability appears to have been fixed in 19.5.0.

Affected products

• Debian Debian Linux: version 7.0 only; version 8.0 only
• Gunicorn Gunicorn: version 19.4.5 only

Published 2018-04-18. Last modified 2026-06-17.