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Fencer Intel
high 7.8

CVE-2020-3864 json

A logic issue was addressed with improved validation.

published 6y ago modified 4mo ago also EUVD-2020-25129

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 34%
public exploits
0
none known

Summary

A logic issue was addressed with improved validation. This issue is fixed in iCloud for Windows 7.17, iTunes 12.10.4 for Windows, iCloud for Windows 10.9.2, tvOS 13.3.1, Safari 13.0.5, iOS 13.3.1 and iPadOS 13.3.1. A DOM object context may not have had a unique security origin.

Patch / fix

  • Apple iOS and iPadOS 13.3
  • Apple tvOS 13.3
  • Apple Safari 13.0
  • Apple iTunes for Windows 12.10
  • Apple iCloud for Windows 7.17, 10.9
  • wpewebkit Debian 14, Debian 13, Debian 12 2.26.4-1
  • webkit2gtk Debian 14, Debian 13, Debian 12 2.26.4-1

debian advisories DEBIAN-CVE-2020-3864

  • webkit2gtk Ubuntu 18.04 LTS 2.26.4-0ubuntu0.18.04.1
  • webkit2gtk Ubuntu 20.04 LTS 2.26.4-1ubuntu1

ubuntu advisories UBUNTU-CVE-2020-3864

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • LibRaw RHEL 8 0.19.5-2.el8
  • webkit2gtk3 RHEL 8 2.28.4-1.el8
  • webkit2gtk3-jsc RHEL 8 2.28.4-1.el8
  • gnome-settings-daemon RHEL 8 3.32.0-11.el8
  • webkitgtk4 RHEL 7 2.28.2-2.el7
  • webkitgtk4-jsc RHEL 7 2.28.2-2.el7

red hat advisories RHSA-2020:4451RHSA-2020:4035

  • webkit2gtk3 SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +15 more 2.28.1-2.50.3
  • webkit2gtk3 SLES for SAP 15, SLES 15-LTSS, SLE Module for Desktop Applications 15 SP1 +5 more 2.26.4-3.43.1

suse advisories SUSE-SU-2020:1135-1SUSE-SU-2020:0468-1

  • webkit2gtk3 openSUSE Leap 15.1 2.26.4-lp151.2.12.1

opensuse advisories openSUSE-SU-2020:0278-1

  • gvfs AlmaLinux 8 1.36.2-10.el8
  • vte291 AlmaLinux 8 0.52.4-2.el8
  • libsoup AlmaLinux 8 2.62.3-2.el8
  • potrace AlmaLinux 8 1.15-3.el8
  • tracker AlmaLinux 8 2.1.5-2.el8
  • nautilus AlmaLinux 8 3.28.1-14.el8
  • pipewire AlmaLinux 8 0.3.6-1.el8
  • PackageKit AlmaLinux 8 1.1.12-6.el8

almalinux advisories ALSA-2020:4451

  • gtk3 Rocky Linux 8 3.22.30-6.el8
  • LibRaw Rocky Linux 8 0.19.5-2.el8
  • vte291 Rocky Linux 8 0.52.4-2.el8
  • libsoup Rocky Linux 8 2.62.3-2.el8
  • potrace Rocky Linux 8 1.15-3.el8
  • tracker Rocky Linux 8 2.1.5-2.el8
  • pipewire Rocky Linux 8 0.3.6-1.el8
  • PackageKit Rocky Linux 8 1.1.12-6.el8

rocky linux advisories RLSA-2020:4451

Is CVE-2020-3864 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-3864 updated cvss 7.5

webkitgtk: Non-unique security origin for DOM object contexts

  • Red Hat Enterprise Linux 6 webkitgtk
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 webkitgtk3, libwebkit2gtk
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux AppStream (v. 8) webkit2gtk3 2.28.4-1.el8, webkit2gtk3-jsc 2.28.4-1.el8
    fixed: vendor fix RHSA-2020:4451
  • Red Hat Enterprise Linux Client (v. 7) webkitgtk4 2.28.2-2.el7, webkitgtk4-jsc 2.28.2-2.el7 Red Hat Enterprise Linux Client Optional (v. 7) webkitgtk4-doc 2.28.2-2.el7, webkitgtk4-devel 2.28.2-2.el7, webkitgtk4-debuginfo 2.28.2-2.el7, webkitgtk4-jsc-devel 2.28.2-2.el7 Red Hat Enterprise Linux ComputeNode (v. 7) webkitgtk4 2.28.2-2.el7, webkitgtk4-jsc 2.28.2-2.el7 Red Hat Enterprise Linux ComputeNode Optional (v. 7) webkitgtk4-doc 2.28.2-2.el7, webkitgtk4-devel 2.28.2-2.el7, webkitgtk4-debuginfo 2.28.2-2.el7, webkitgtk4-jsc-devel 2.28.2-2.el7 Red Hat Enterprise Linux Server (v. 7) webkitgtk4 2.28.2-2.el7, webkitgtk4-jsc 2.28.2-2.el7 Red Hat Enterprise Linux Server Optional (v. 7) webkitgtk4-doc 2.28.2-2.el7, webkitgtk4-devel 2.28.2-2.el7, webkitgtk4-debuginfo 2.28.2-2.el7, webkitgtk4-jsc-devel 2.28.2-2.el7
    +2 more products
    Red Hat Enterprise Linux Workstation (v. 7) webkitgtk4 2.28.2-2.el7, webkitgtk4-jsc 2.28.2-2.el7 Red Hat Enterprise Linux Workstation Optional (v. 7) webkitgtk4-doc 2.28.2-2.el7
    fixed: vendor fix RHSA-2020:4035
  • Red Hat CodeReady Linux Builder (v. 8) gvfs 1.36.2-10.el8, nautilus 3.28.1-14.el8, frei0r-plugins 1.6.1-7.el8 Red Hat Enterprise Linux AppStream (v. 8) gdm 3.28.3-34.el8, gtk3 3.22.30-6.el8, gvfs 1.36.2-10.el8, potrace 1.15-3.el8, LibRaw 0.19.5-2.el8, tracker 2.1.5-2.el8, +72 more Red Hat Enterprise Linux BaseOS (v. 8) libsoup 2.62.3-2.el8, pygobject3 3.28.3-2.el8, python3-gobject-base 3.28.3-2.el8, gsettings-desktop-schemas 3.32.0-5.el8
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.40% chance of exploitation in the next 30 days, higher than 34% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

Affected products

  • Apple iOS and iPadOS
  • Apple tvOS
  • Apple Safari
  • Apple iTunes for Windows
  • Apple iCloud for Windows

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.