CVE-2020-10109: Canonical Ubuntu Linux

Critical severity, CVSS 9.8. EPSS: 3.3% chance of exploitation in the next 30 days.

In Twisted Web through 19.10.0, there was an HTTP request splitting vulnerability. When presented with a content-length and a chunked encoding header, the content-length took precedence and the remainder of the request body was interpreted as a pipelined request.

Affected products

• Canonical Ubuntu Linux: version 14.04 only; version 16.04 only; version 18.04 only; version 19.10 only
• Debian Debian Linux: version 9.0 only
• Fedoraproject Fedora: version 31 only; version 32 only
• Twisted Twisted: up to and including 19.10.0

Published 2020-03-12. Last modified 2026-06-17.