Vulnerability Report

CVE-2016-4590

Title: Apple Webkit Improper Input Validation

Input Validation Error

Proof Of Concept

No public PoC currently indexed for CVE-2016-4590.

CWE Category CWE-20

Published Date Jul 22, 2016

Modified Date May 06, 2026

Exploit Status Not Found

Score 5.4 CVSS v3.0

Exploit Probability (EPSS)

1.47%

Vulnerability Summary

CVE-2016-4590: WebKit in Apple iOS before 9.3.3 and Safari before 9.1.2 mishandles about: URLs, which allows remote attackers to bypass the Same Origin Policy via a crafted web site.

Impacted Vendors

webkit 1

apple 2

Reference Links

http://lists.apple.com/archives/security-announce/2016/Jul/msg00001.html http://lists.apple.com/archives/security-announce/2016/Jul/msg00004.html http://packetstormsecurity.com/files/138502/WebKitGTK-SOP-Bypass-Information-Disclosure.html http://www.securityfocus.com/archive/1/539295/100/0/threaded http://www.securityfocus.com/bid/91835 http://www.securitytracker.com/id/1036343 https://support.apple.com/HT206900 https://support.apple.com/HT206902 http://lists.apple.com/archives/security-announce/2016/Jul/msg00001.html http://lists.apple.com/archives/security-announce/2016/Jul/msg00004.html http://packetstormsecurity.com/files/138502/WebKitGTK-SOP-Bypass-Information-Disclosure.html http://www.securityfocus.com/archive/1/539295/100/0/threaded http://www.securityfocus.com/bid/91835 http://www.securitytracker.com/id/1036343 https://support.apple.com/HT206900 https://support.apple.com/HT206902

CVSS v3.0

Source Entity [email protected]

Severity MEDIUM

5.4

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

REQUIRED

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

CVSS v2.0

Source Entity [email protected]

Severity MEDIUM

4.3

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:N/AC:M/Au:N/C:N/I:P/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2016-4590 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

May 06, 2026 MODIFIED

Vulnerability data updated via NVD.

April 12, 2025 MODIFIED

Vulnerability data or affected products updated.

July 22, 2016 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity LOW

Privileges N/A

Interaction REQUIRED

CVSS Vector String


                                    CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Affected Stack

No specific products linked.