CVE-2019-8658 — webkitgtk: Incorrect state management leading to universal cross-site scripting

Back Back to CVE browser

MEDIUM

webkitgtk: Incorrect state management leading to universal cross-site scripting

Published Dec 18, 2019

6.1

MEDIUM

CVSS 3.1

EPSS 1.24%

Description

A logic issue was addressed with improved state management. This issue is fixed in iOS 12.4, macOS Mojave 10.14.6, tvOS 12.4, watchOS 5.3, Safari 12.1.2, iTunes for Windows 12.9.6, iCloud for Windows 7.13, iCloud for Windows 10.6. Processing maliciously crafted web content may lead to universal cross site scripting.

Affected products

Vendor Apple Product Safari Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <Safari 12.1.2
Vendor Apple Product iCloud for Windows Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <iCloud for Windows 7.13
Vendor Apple Product iCloud for Windows (Microsoft Store) Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <iCloud for Windows 10.6
Vendor Apple Product iOS Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <iOS 12.4
Vendor Apple Product iTunes for Windows Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <iTunes for Windows 12.9.6
Vendor Apple Product macOS Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <macOS Mojave 10.14.6
Vendor Apple Product tvOS Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <tvOS 12.4
Vendor Apple Product watchOS Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <watchOS 5.3

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 12.1.2

Apple

iCloud for Windows

n/a

Version	Status	Constraints
unspecified	affected	<iCloud for Windows 7.13

Apple

iCloud for Windows (Microsoft Store)

n/a

Version	Status	Constraints
unspecified	affected	<iCloud for Windows 10.6

Apple

iOS

n/a

Version	Status	Constraints
unspecified	affected	<iOS 12.4

Apple

iTunes for Windows

n/a

Version	Status	Constraints
unspecified	affected	<iTunes for Windows 12.9.6

Apple

macOS

n/a

Version	Status	Constraints
unspecified	affected	<macOS Mojave 10.14.6

Apple

tvOS

n/a

Version	Status	Constraints
unspecified	affected	<tvOS 12.4

Apple

watchOS

n/a

Version	Status	Constraints
unspecified	affected	<watchOS 5.3

Red Hat Enterprise Linux 7

webkitgtk4-0:2.28.2-2.el7

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

webkit2gtk3-0:2.24.4-2.el8_1

Fixed · RHEA-2019:4262
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	webkit2gtk3-0:2.24.4-2.el8_1	Fixed	RHEA-2019:4262
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

1.24% 0.01240

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.01240

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 (16 key points)

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

Date	Score	Percentile	Model
Oct 1, 2026	1.24% (0.01240)	68.07th	v5 (v2026.06.15)
Sep 20, 2026	1.24% (0.01240)	67.83th	v5 (v2026.06.15)
Jul 20, 2024	0.54% (0.00536)	77.42th	v3 (v2023.03.01)
Mar 13, 2024	0.54% (0.00536)	76.67th	v3 (v2023.03.01)
Dec 25, 2023	0.54% (0.00536)	74.66th	v3 (v2023.03.01)
Dec 11, 2023	0.38% (0.00378)	69.82th	v3 (v2023.03.01)
Nov 24, 2023	0.27% (0.00266)	64.07th	v3 (v2023.03.01)
Oct 22, 2023	0.23% (0.00233)	61.12th	v3 (v2023.03.01)
Mar 7, 2023	0.19% (0.00186)	54.21th	v3 (v2023.03.01)
Mar 6, 2023	1.18% (0.01183)	61.76th	v2 (v2022.01.01)
Apr 1, 2022	1.18% (0.01183)	58.77th	v2 (v2022.01.01)
Feb 4, 2022	22.40% (0.22399)	94.37th	v2 (v2022.01.01)
Feb 3, 2022	1.31% (0.01307)	31.20th	v1
Jan 6, 2022	1.31% (0.01307)	30.55th	v1
Jan 5, 2022	0.29% (0.00294)	6.06th	v5 (v2026.06.15)
Apr 14, 2021	0.29% (0.00294)	0.00th	v1

Weaknesses (1)

CWE-79

Cross-site Scripting (XSS)

References (13)

https://access.redhat.com/security/cve/CVE-2019-8658
Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1876629
Issue Tracking
https://nvd.nist.gov/vuln/detail/CVE-2019-8658
https://support.apple.com/HT210346
x_refsource_MISCVendor Advisory
https://support.apple.com/HT210348
x_refsource_MISCVendor Advisory
https://support.apple.com/HT210351
x_refsource_MISCVendor Advisory
https://support.apple.com/HT210353
x_refsource_MISCVendor Advisory
https://support.apple.com/HT210355
x_refsource_MISCVendor Advisory
https://support.apple.com/HT210356
x_refsource_MISCVendor Advisory
https://support.apple.com/HT210357
x_refsource_MISCVendor Advisory
https://support.apple.com/HT210358
x_refsource_MISCVendor Advisory
https://webkitgtk.org/security/WSA-2019-0004.html
https://www.cve.org/CVERecord?id=CVE-2019-8658

Link	Providers	Tags
https://access.redhat.com/security/cve/CVE-2019-8658		Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1876629		Issue Tracking
https://nvd.nist.gov/vuln/detail/CVE-2019-8658
https://support.apple.com/HT210346		x_refsource_MISCVendor Advisory
https://support.apple.com/HT210348		x_refsource_MISCVendor Advisory
https://support.apple.com/HT210351		x_refsource_MISCVendor Advisory
https://support.apple.com/HT210353		x_refsource_MISCVendor Advisory
https://support.apple.com/HT210355		x_refsource_MISCVendor Advisory
https://support.apple.com/HT210356		x_refsource_MISCVendor Advisory
https://support.apple.com/HT210357		x_refsource_MISCVendor Advisory
https://support.apple.com/HT210358		x_refsource_MISCVendor Advisory
https://webkitgtk.org/security/WSA-2019-0004.html
https://www.cve.org/CVERecord?id=CVE-2019-8658