CVE-2020-3902 — webkitgtk: Input validation issue leading to cross-site script attack

Back Back to CVE browser

MEDIUM

webkitgtk: Input validation issue leading to cross-site script attack

Published Apr 1, 2020

6.1

MEDIUM

CVSS 3.1

EPSS 1.15%

Description

An input validation issue was addressed with improved input validation. This issue is fixed in iOS 13.4 and iPadOS 13.4, tvOS 13.4, Safari 13.1, iTunes for Windows 12.10.5, iCloud for Windows 10.9.3, iCloud for Windows 7.18. Processing maliciously crafted web content may lead to a cross site scripting attack.

Affected products

Vendor Apple Product Safari Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <Safari 13.1
Vendor Apple Product iCloud for Windows Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <iCloud for Windows 10.9.3
Vendor Apple Product iCloud for Windows (Legacy) Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <iCloud for Windows 7.18
Vendor Apple Product iOS Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <iOS 13.4 and iPadOS 13.4
Vendor Apple Product iTunes for Windows Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <iTunes for Windows 12.10.5
Vendor Apple Product tvOS Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <tvOS 13.4

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Apple

Safari

n/a

Version	Status	Constraints
unspecified	affected	<Safari 13.1

Apple

iCloud for Windows

n/a

Version	Status	Constraints
unspecified	affected	<iCloud for Windows 10.9.3

Apple

iCloud for Windows (Legacy)

n/a

Version	Status	Constraints
unspecified	affected	<iCloud for Windows 7.18

Apple

iOS

n/a

Version	Status	Constraints
unspecified	affected	<iOS 13.4 and iPadOS 13.4

Apple

iTunes for Windows

n/a

Version	Status	Constraints
unspecified	affected	<iTunes for Windows 12.10.5

Apple

tvOS

n/a

Version	Status	Constraints
unspecified	affected	<tvOS 13.4

Red Hat Enterprise Linux 7

webkitgtk4-0:2.28.2-2.el7

Fixed · RHSA-2020:4035
Red Hat Enterprise Linux 8

webkit2gtk3-0:2.28.4-1.el8

Fixed · RHSA-2020:4451
Red Hat Enterprise Linux 6

webkitgtk

Out of support scope
Red Hat Enterprise Linux 7

webkitgtk3

Will not fix

Product	Package	State	Advisory
Red Hat Enterprise Linux 7	webkitgtk4-0:2.28.2-2.el7	Fixed	RHSA-2020:4035
Red Hat Enterprise Linux 8	webkit2gtk3-0:2.28.4-1.el8	Fixed	RHSA-2020:4451
Red Hat Enterprise Linux 6	webkitgtk	Out of support scope	n/a
Red Hat Enterprise Linux 7	webkitgtk3	Will not fix	n/a

Remediation

No remediation recorded yet.

Metrics

1.15% 0.01153

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.

EPSS probability 0.01153

Score over time

2021–2026

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Percentile over time

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Table of values (13 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 3, 2026	1.15% (0.01153)	65.86th	v5 (v2026.06.15)
Sep 20, 2026	1.15% (0.01153)	65.55th	v5 (v2026.06.15)
Jul 20, 2024	0.74% (0.00743)	81.11th	v3 (v2023.03.01)
Jun 14, 2024	0.74% (0.00743)	80.97th	v3 (v2023.03.01)
Feb 4, 2024	0.74% (0.00743)	78.96th	v3 (v2023.03.01)
Jan 20, 2024	0.60% (0.00596)	76.07th	v3 (v2023.03.01)
Sep 3, 2023	0.50% (0.00499)	73.35th	v3 (v2023.03.01)
Mar 7, 2023	0.57% (0.00574)	74.58th	v3 (v2023.03.01)
Mar 6, 2023	1.11% (0.01108)	55.18th	v2 (v2022.01.01)
Apr 1, 2022	1.11% (0.01108)	51.54th	v2 (v2022.01.01)
Feb 4, 2022	5.19% (0.05189)	75.21th	v2 (v2022.01.01)
Feb 3, 2022	1.02% (0.01018)	27.23th	v5 (v2026.06.15)
Apr 14, 2021	0.23% (0.00229)	0.00th	v1

Weaknesses (1)

CWE-79

Cross-site Scripting (XSS)

References (11)

https://access.redhat.com/security/cve/CVE-2020-3902
Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1876476
Issue Tracking
https://nvd.nist.gov/vuln/detail/CVE-2020-3902
https://support.apple.com/HT211101
x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/HT211102
x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/HT211104
x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/HT211105
x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/HT211106
x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/HT211107
x_refsource_MISCRelease NotesVendor Advisory
https://webkitgtk.org/security/WSA-2020-0005.html
https://www.cve.org/CVERecord?id=CVE-2020-3902

Link	Providers	Tags
https://access.redhat.com/security/cve/CVE-2020-3902		Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1876476		Issue Tracking
https://nvd.nist.gov/vuln/detail/CVE-2020-3902
https://support.apple.com/HT211101		x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/HT211102		x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/HT211104		x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/HT211105		x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/HT211106		x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/HT211107		x_refsource_MISCRelease NotesVendor Advisory
https://webkitgtk.org/security/WSA-2020-0005.html
https://www.cve.org/CVERecord?id=CVE-2020-3902