CVE-2015-2296: Canonical Ubuntu Linux

Medium severity, CVSS 6.8. EPSS: 3.4% chance of exploitation in the next 30 days.

The resolve_redirects function in sessions.py in requests 2.1.0 through 2.5.3 allows remote attackers to conduct session fixation attacks via a cookie without a host value in a redirect.

Affected products

• Canonical Ubuntu Linux: version 14.04 only; version 14.10 only
• Mageia Project Mageia: version 4.0 only
• Python Requests: version 2.1.0 only; version 2.2.1 only; version 2.3.0 only; version 2.4.0 only; version 2.4.1 only; version 2.4.2 only; …

Published 2015-03-18. Last modified 2026-06-17.