CVE-2016-4793

CakePHP allows remote attackers to spoof their IP

7.5 HighPublic exploitFix available

The clientIp function in CakePHP 3.2.4 and earlier allows remote attackers to spoof their IP via the CLIENT-IP HTTP header.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: High
Availability: None

Exploit likelihood

5.15%Down 3.8 points since Feb 4, 2022

What each source reports

NVD Score used 7.5

The clientIp function in CakePHP 3.2.4 and earlier allows remote attackers to spoof their IP via the CLIENT-IP HTTP header.

Record: CVE-2016-4793
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:P/A:N
Weakness: CWE-20
Updated: 2026-11-02

CVE List No score

The clientIp function in CakePHP 3.2.4 and earlier allows remote attackers to spoof their IP via the CLIENT-IP HTTP header.

Record: CVE-2016-4793
Updated: 2026-11-02

EUVDEUVD-2022-4314 No score

The clientIp function in CakePHP 3.2.4 and earlier allows remote attackers to spoof their IP via the CLIENT-IP HTTP header.

Record: EUVD-2022-4314
Updated: 2026-11-03

GitHub AdvisoriesGHSA-j8p3-8m69-2hqq 7.5

CakePHP allows remote attackers to spoof their IP

The clientIp function in CakePHP 3.2.4 and earlier allows remote attackers to spoof their IP via the CLIENT-IP HTTP header.

Record: GHSA-j8p3-8m69-2hqq
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness: CWE-20
Updated: 2026-11-02

OSV 7.5

The clientIp function in CakePHP 3.2.4 and earlier allows remote attackers to spoof their IP via the CLIENT-IP HTTP header.

Record: CVE-2016-4793
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Updated: 2026-11-02

OSVDEBIAN-CVE-2016-4793 7.5

The clientIp function in CakePHP 3.2.4 and earlier allows remote attackers to spoof their IP via the CLIENT-IP HTTP header.

Record: DEBIAN-CVE-2016-4793
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Updated: 2026-11-02

OSVGHSA-j8p3-8m69-2hqq 7.5

CakePHP allows remote attackers to spoof their IP

The clientIp function in CakePHP 3.2.4 and earlier allows remote attackers to spoof their IP via the CLIENT-IP HTTP header.

Record: GHSA-j8p3-8m69-2hqq
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness: CWE-20
Updated: 2026-11-02

OSVUBUNTU-CVE-2016-4793 7.5

The clientIp function in CakePHP 3.2.4 and earlier allows remote attackers to spoof their IP via the CLIENT-IP HTTP header.

Record: UBUNTU-CVE-2016-4793
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Updated: 2026-11-04

OSVUSN-8978-1 No score

cakephp vulnerability

Dawid Golunski discovered that CakePHP incorrectly trusted the CLIENT-IP HTTP header when determining the client IP address. A remote attacker could possibly use this issue to spoof their IP address.

Record: USN-8978-1
Updated: 2026-11-04

Affected products

cakephp

Affected packages

Affected packages
Package	Affected	Fixed
`cakephp/cakephp` Packagist	1.2.0 up to 2.6.13	2.6.13
`cakephp/cakephp` Packagist	2.7.0-rc1 up to 2.7.11	2.7.11
`cakephp/cakephp` Packagist	2.8.0-rc1 up to 2.8.2	2.8.2
`cakephp/cakephp` Packagist	3.0.0-rc1 up to 3.0.17	3.0.17
`cakephp/cakephp` Packagist	3.1.0-beta1 up to 3.1.12	3.1.12
`cakephp/cakephp` Packagist	3.2.0-rc1 up to 3.2.5	3.2.5
`cakephp` Debian:11	before 2.8.3-1	2.8.3-1
`cakephp` Debian:7	before 1.3.15-1+deb7u2, plus listed versions 1.3.15-11.3.15-1+deb7u1	1.3.15-1+deb7u2
`cakephp/cakephp` Packagist	1.2.0 up to 2.6.13, plus listed versions 2.4.102.4.52.4.62.4.72.4.8 Show 29 moreShow less 2.4.92.5.02.5.0-RC12.5.0-RC22.5.0-beta2.5.12.5.22.5.32.5.42.5.52.5.62.5.72.5.82.5.92.6.02.6.0-RC12.6.0-beta2.6.12.6.102.6.112.6.122.6.22.6.32.6.42.6.52.6.62.6.72.6.82.6.9	2.6.13
`cakephp/cakephp` Packagist	2.7.0-rc1 up to 2.7.11, plus listed versions 2.7.02.7.12.7.102.7.22.7.3 Show 6 moreShow less 2.7.42.7.52.7.62.7.72.7.82.7.9	2.7.11

Show 6 moreShow less

Affected packages
Package	Affected	Fixed
`cakephp/cakephp` Packagist	2.8.0-rc1 up to 2.8.2, plus listed versions 2.8.02.8.0-RC12.8.1	2.8.2
`cakephp/cakephp` Packagist	3.0.0-rc1 up to 3.0.17, plus listed versions 3.0.03.0.0-RC13.0.0-RC23.0.13.0.10 Show 14 moreShow less 3.0.113.0.123.0.133.0.143.0.153.0.163.0.23.0.33.0.43.0.53.0.63.0.73.0.83.0.9	3.0.17
`cakephp/cakephp` Packagist	3.1.0-beta1 up to 3.1.12, plus listed versions 3.1.03.1.0-RC13.1.0-beta23.1.13.1.10 Show 9 moreShow less 3.1.113.1.23.1.33.1.43.1.53.1.63.1.73.1.83.1.9	3.1.12
`cakephp/cakephp` Packagist	3.2.0-rc1 up to 3.2.5, plus listed versions 3.2.03.2.0-RC13.2.13.2.23.2.33.2.4	3.2.5
`cakephp` Ubuntu:14.04:LTS	before 1.3.15-1+deb7u2build0.14.04.1, plus listed versions 1.3.15-1	1.3.15-1+deb7u2build0.14.04.1
`cakephp` Ubuntu:Pro:16.04:LTS	before 2.8.0-1ubuntu0.1~esm1, plus listed versions 2.7.2-12.8.0-1	2.8.0-1ubuntu0.1~esm1

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Exploit-DB	CakePHP Framework 3.2.4 - IP Spoofing	2016-05-16

History

History
Recorded	Changed	Sources
Nov 4, 2026	affected, aliases, references	OSV
Nov 3, 2026	affected, facts	OSV
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, Exploit-DB, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2016-4793 is a high vulnerability (CVSS 7.5) in Cakephp, published January 23, 2017. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 5.15%, the 92nd percentile. Fixed in cakephp/cakephp 2.6.13.

References

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