CVE-2015-0881: Squid-Cache Squid

Medium severity, CVSS 4.3. EPSS: 4.5% chance of exploitation in the next 30 days.

CRLF injection vulnerability in Squid before 3.1.1 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via a crafted header in a response.

Affected products

• Squid-Cache Squid: up to and including 3.1.0.18

Published 2015-02-20. Last modified 2026-06-17.