Medium severity · published Apr 3, 2018
CVE-2018-4133
An issue was discovered in certain Apple products
6.1
CVSS
1.5%
EPSS
No
On KEV
Description
An issue was discovered in certain Apple products. Safari before 11.1 is affected. The issue involves the "WebKit" component. A Safari cross-site scripting (XSS) vulnerability allows remote attackers to inject arbitrary web script or HTML via a crafted URL.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)1.5% · higher than 74% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SA
Safari · Apple
before 11.1 · source: NVD
UL
Ubuntu Linux · Canonical
16.04; 17.10 · source: NVD
WE
Webkitgtk+ · Webkitgtk
before 2.20.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-4133
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-4133
Third Party Advisory
http://www.securityfocus.com/bid/103580
Third Party Advisory
http://www.securitytracker.com/id/1040606
Third Party Advisory
https://security.gentoo.org/glsa/201808-04
Vendor Advisory
https://support.apple.com/HT208695
Third Party Advisory
https://usn.ubuntu.com/3635-1/
More from Safari
10.0
CVE-2025-24201
Apple Multiple Products WebKit Out-of-Bounds Write Vulnerability
8.8
CVE-2025-43529
Apple Multiple Products Use-After-Free WebKit Vulnerability
8.8
CVE-2025-14174
Google Chromium Out of Bounds Memory Access Vulnerability
8.8
CVE-2023-43000
Apple Multiple products Use-After-Free Vulnerability
8.8
CVE-2025-31277
Apple Multiple Products Buffer Overflow Vulnerability