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Fencer Vulns
high 8.8

CVE-2023-2203 json

A flaw was found in the WebKitGTK package.

published 2023-05-17 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-33715

cvss
8.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 60%
public exploits
0
none known

Summary

A flaw was found in the WebKitGTK package. An improper input validation issue may lead to a use-after-free vulnerability. This flaw allows attackers with network access to pass specially crafted web content files, causing a denial of service or arbitrary code execution. This CVE exists because of a CVE-2023-28205 security regression for the WebKitGTK package in Red Hat Enterprise Linux 8.8 and Red Hat Enterprise Linux 9.2.

Patch / fix

  • webkit2gtk3 RHEL 8 2.38.5-1.el8_8.3
  • webkit2gtk3-jsc RHEL 8 2.38.5-1.el8_8.3
  • webkit2gtk3 RHEL 9 2.38.5-1.el9_2.1
  • webkit2gtk3-jsc RHEL 9 2.38.5-1.el9_2.1

red hat advisories RHSA-2023:3108RHSA-2023:2653

  • webkit2gtk3 AlmaLinux 8 2.38.5-1.el8_8.3
  • webkit2gtk3-jsc AlmaLinux 8 2.38.5-1.el8_8.3
  • webkit2gtk3 AlmaLinux 9 2.38.5-1.el9_2.1
  • webkit2gtk3-jsc AlmaLinux 9 2.38.5-1.el9_2.1

almalinux advisories ALSA-2023:3108ALSA-2023:2653

  • webkit2gtk3 Rocky Linux 8 2.38.5-1.el8_8.3

rocky linux advisories RLSA-2023:3108

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-2023-2203 updated cvss 8.8

webkitgtk: Regression of CVE-2023-28205 fixes in the Red Hat Enterprise Linux

  • Red Hat Enterprise Linux AppStream (v. 8) webkit2gtk3 2.38.5-1.el8_8.3, webkit2gtk3-jsc 2.38.5-1.el8_8.3
    fixed: vendor fix RHSA-2023:3108
  • Red Hat Enterprise Linux AppStream (v. 9) webkit2gtk3 2.38.5-1.el9_2.1, webkit2gtk3-jsc 2.38.5-1.el9_2.1
    fixed: vendor fix RHSA-2023:2653
  • Red Hat Enterprise Linux 6 webkitgtk Red Hat Enterprise Linux 7 webkitgtk3, webkitgtk4, libwebkit2gtk, webkitgtk4-jsc, webkitgtk4-plugin-process-gtk2
    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

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
21 mo ago

Exploit prediction

0.93% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • n/a WebKitGTK

Classification

Weakness

References

Sources

Fencer Vulns 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.