VULNERABILITY INTELLIGENCE

CVE-2016-4554

CVSS score8.6 HIGH
EPSS probability38.89%
CISA KEVNot currently listed
Published2016-05-10
Last modified2026-06-17
CVSS vectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

Description

mime_header.cc in Squid before 3.5.18 allows remote attackers to bypass intended same-origin restrictions and possibly conduct cache-poisoning attacks via a crafted HTTP Host header, aka a "header smuggling" issue.

Weakness classification

  • CWE-345: Insufficient Verification of Data Authenticity

Primary references