Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2016-4554

Insufficient Verification of Data Authenticity

Published: May 10, 2016 | Modified: Apr 12, 2025
CVSS 3.x
8.6
HIGH
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:N/I:P/A:N
RedHat/V2
4 MODERATE
AV:N/AC:H/Au:N/C:N/I:P/A:P
RedHat/V3
Ubuntu
MEDIUM
Vulnerability-free packages from our partners
root.io logo minimus.io logo echo.ai logo
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2016-4554
CWEhttps://cwe.mitre.org/data/definitions/345.html

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

The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.

Affected Software

NameVendorStart VersionEnd Version
LinuxOracle6 (including)6 (including)
LinuxOracle7 (including)7 (including)
Red Hat Enterprise Linux 6RedHatsquid-7:3.1.23-16.el6_8.4*
Red Hat Enterprise Linux 6RedHatsquid34-7:3.4.14-9.el6_8.3*
Red Hat Enterprise Linux 7RedHatsquid-7:3.3.8-26.el7_2.3*
Squid3Ubuntudevel*
Squid3Ubuntuesm-infra/xenial*
Squid3Ubuntuprecise*
Squid3Ubuntutrusty*
Squid3Ubuntuupstream*
Squid3Ubuntuwily*
Squid3Ubuntuxenial*

References

Aqua Security is the largest pure-play cloud native security company, providing customers the freedom to innovate and run their businesses with minimal friction. The Aqua Cloud Native Security Platform provides prevention, detection, and response automation across the entire application lifecycle to secure the build, secure cloud infrastructure and secure running workloads wherever they are deployed.
Copyright © 2026 Aqua Security Software Ltd.   Privacy Policy | Terms of Use