CVE-2015-5144: Canonical Ubuntu Linux

Medium severity, CVSS 4.3. EPSS: 3.7% chance of exploitation in the next 30 days.

Django before 1.4.21, 1.5.x through 1.6.x, 1.7.x before 1.7.9, and 1.8.x before 1.8.3 uses an incorrect regular expression, which allows remote attackers to inject arbitrary headers and conduct HTTP response splitting attacks via a newline character in an (1) email message to the EmailValidator, a (2) URL to the URLValidator, or unspecified vectors to the (3) validate_ipv4_address or (4) validate_slug validator.

Affected products

• Canonical Ubuntu Linux: version 12.04 only; version 14.04 only; version 15.04 only; version 15.10 only
• Debian Debian Linux: version 7.0 only; version 8.0 only
• Djangoproject Django: up to and including 1.4.20; version 1.5 only; version 1.5.1 only; version 1.5.2 only; version 1.5.3 only; version 1.5.4 only; …
• Oracle Solaris: version 11.3 only

Published 2015-07-14. Last modified 2026-06-17.