Bug 2453000 (CVE-2026-20643) - CVE-2026-20643 webkitgtk: Processing maliciously crafted web content may bypass Same Origin Policy
Summary: CVE-2026-20643 webkitgtk: Processing maliciously crafted web content may bypa...
Keywords:
Status: NEW
Alias: CVE-2026-20643
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2453062 2453063 2453064
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-03-30 12:29 UTC by OSIDB Bzimport
Modified: 2026-06-01 01:54 UTC (History)
0 users

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:10702 0 None None None 2026-04-27 01:51:07 UTC
Red Hat Product Errata RHSA-2026:11329 0 None None None 2026-04-28 07:31:25 UTC
Red Hat Product Errata RHSA-2026:11814 0 None None None 2026-04-29 16:13:38 UTC
Red Hat Product Errata RHSA-2026:13845 0 None None None 2026-05-05 18:10:33 UTC
Red Hat Product Errata RHSA-2026:14659 0 None None None 2026-05-07 05:53:51 UTC
Red Hat Product Errata RHSA-2026:16056 0 None None None 2026-05-11 18:42:28 UTC
Red Hat Product Errata RHSA-2026:16695 0 None None None 2026-05-13 01:56:15 UTC
Red Hat Product Errata RHSA-2026:19206 0 None None None 2026-05-19 18:02:02 UTC
Red Hat Product Errata RHSA-2026:19535 0 None None None 2026-05-20 05:27:08 UTC
Red Hat Product Errata RHSA-2026:22136 0 None None None 2026-06-01 01:54:58 UTC
Red Hat Product Errata RHSA-2026:9692 0 None None None 2026-04-22 11:43:59 UTC

Description OSIDB Bzimport 2026-03-30 12:29:03 UTC 
A cross-origin issue in the Navigation API was addressed with improved input validation. This issue is fixed in Background Security Improvements for iOS, iPadOS, and macOS, Safari 26.4, iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, visionOS 26.4. Processing maliciously crafted web content may bypass Same Origin Policy.
Comment 2 errata-xmlrpc 2026-04-22 11:43:58 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:9692 https://access.redhat.com/errata/RHSA-2026:9692
Comment 3 errata-xmlrpc 2026-04-27 01:51:06 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:10702 https://access.redhat.com/errata/RHSA-2026:10702
Comment 4 errata-xmlrpc 2026-04-28 07:31:24 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:11329 https://access.redhat.com/errata/RHSA-2026:11329
Comment 5 errata-xmlrpc 2026-04-29 16:13:37 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Via RHSA-2026:11814 https://access.redhat.com/errata/RHSA-2026:11814
Comment 6 errata-xmlrpc 2026-05-05 18:10:32 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.6 Telecommunications Update Service

Via RHSA-2026:13845 https://access.redhat.com/errata/RHSA-2026:13845
Comment 7 errata-xmlrpc 2026-05-07 05:53:50 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Extended Update Support

Via RHSA-2026:14659 https://access.redhat.com/errata/RHSA-2026:14659
Comment 8 errata-xmlrpc 2026-05-11 18:42:27 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

Via RHSA-2026:16056 https://access.redhat.com/errata/RHSA-2026:16056
Comment 9 errata-xmlrpc 2026-05-13 01:56:15 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:16695 https://access.redhat.com/errata/RHSA-2026:16695
Comment 10 errata-xmlrpc 2026-05-19 18:02:01 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:19206 https://access.redhat.com/errata/RHSA-2026:19206
Comment 11 errata-xmlrpc 2026-05-20 05:27:07 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Via RHSA-2026:19535 https://access.redhat.com/errata/RHSA-2026:19535
Comment 12 errata-xmlrpc 2026-06-01 01:54:57 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2026:22136 https://access.redhat.com/errata/RHSA-2026:22136
Note You need to log in before you can comment on or make changes to this bug.