Bug 2517820 (CVE-2026-74934) - CVE-2026-74934 firefox: thunderbird: Site isolation issue in the Graphics: CanvasWebGL component
Summary: CVE-2026-74934 firefox: thunderbird: Site isolation issue in the Graphics: Ca...
Keywords:
Status: NEW
Alias: CVE-2026-74934
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-18 12:47 UTC by OSIDB Bzimport
Modified: 2026-09-09 10:31 UTC (History)
5 users (show)

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-2026:58897 0 None None None 2026-08-24 10:05:51 UTC
Red Hat Product Errata RHSA-2026:58898 0 None None None 2026-08-24 09:36:06 UTC
Red Hat Product Errata RHSA-2026:58899 0 None None None 2026-08-24 09:34:57 UTC
Red Hat Product Errata RHSA-2026:64813 0 None None None 2026-09-08 04:05:31 UTC
Red Hat Product Errata RHSA-2026:64814 0 None None None 2026-09-08 03:26:57 UTC
Red Hat Product Errata RHSA-2026:65103 0 None None None 2026-09-08 08:14:15 UTC
Red Hat Product Errata RHSA-2026:65105 0 None None None 2026-09-08 08:04:30 UTC
Red Hat Product Errata RHSA-2026:65110 0 None None None 2026-09-08 07:36:39 UTC
Red Hat Product Errata RHSA-2026:65111 0 None None None 2026-09-08 07:25:49 UTC
Red Hat Product Errata RHSA-2026:65158 0 None None None 2026-09-08 11:48:02 UTC
Red Hat Product Errata RHSA-2026:65159 0 None None None 2026-09-08 09:45:53 UTC
Red Hat Product Errata RHSA-2026:65160 0 None None None 2026-09-08 09:53:53 UTC
Red Hat Product Errata RHSA-2026:65442 0 None None None 2026-09-08 13:30:28 UTC
Red Hat Product Errata RHSA-2026:65633 0 None None None 2026-09-08 19:13:38 UTC
Red Hat Product Errata RHSA-2026:65669 0 None None None 2026-09-08 20:59:07 UTC
Red Hat Product Errata RHSA-2026:65670 0 None None None 2026-09-08 21:03:14 UTC
Red Hat Product Errata RHSA-2026:65757 0 None None None 2026-09-09 02:13:20 UTC
Red Hat Product Errata RHSA-2026:65764 0 None None None 2026-09-09 02:30:30 UTC
Red Hat Product Errata RHSA-2026:65765 0 None None None 2026-09-09 02:41:49 UTC
Red Hat Product Errata RHSA-2026:65766 0 None None None 2026-09-09 03:04:37 UTC
Red Hat Product Errata RHSA-2026:65888 0 None None None 2026-09-09 10:31:28 UTC

Description OSIDB Bzimport 2026-08-18 12:47:04 UTC 
Site isolation issue in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, and Firefox ESR 153.1.
Comment 1 errata-xmlrpc 2026-08-24 09:34:56 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:58899 https://access.redhat.com/errata/RHSA-2026:58899
Comment 2 errata-xmlrpc 2026-08-24 09:36:05 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:58898 https://access.redhat.com/errata/RHSA-2026:58898
Comment 3 errata-xmlrpc 2026-08-24 10:05:50 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:58897 https://access.redhat.com/errata/RHSA-2026:58897
Comment 4 errata-xmlrpc 2026-09-08 03:26:56 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-2026:64814 https://access.redhat.com/errata/RHSA-2026:64814
Comment 5 errata-xmlrpc 2026-09-08 04:05:30 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:64813 https://access.redhat.com/errata/RHSA-2026:64813
Comment 6 errata-xmlrpc 2026-09-08 07:25:48 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-2026:65111 https://access.redhat.com/errata/RHSA-2026:65111
Comment 7 errata-xmlrpc 2026-09-08 07:36:38 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 Extended Update Support Long-Life Add-On

Via RHSA-2026:65110 https://access.redhat.com/errata/RHSA-2026:65110
Comment 8 errata-xmlrpc 2026-09-08 08:04:29 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:65105 https://access.redhat.com/errata/RHSA-2026:65105
Comment 9 errata-xmlrpc 2026-09-08 08:14:13 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:65103 https://access.redhat.com/errata/RHSA-2026:65103
Comment 10 errata-xmlrpc 2026-09-08 09:45:52 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:65159 https://access.redhat.com/errata/RHSA-2026:65159
Comment 11 errata-xmlrpc 2026-09-08 09:53:52 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:65160 https://access.redhat.com/errata/RHSA-2026:65160
Comment 12 errata-xmlrpc 2026-09-08 11:48:01 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:65158 https://access.redhat.com/errata/RHSA-2026:65158
Comment 13 errata-xmlrpc 2026-09-08 13:30:28 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2026:65442 https://access.redhat.com/errata/RHSA-2026:65442
Comment 14 errata-xmlrpc 2026-09-08 19:13:37 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:65633 https://access.redhat.com/errata/RHSA-2026:65633
Comment 15 errata-xmlrpc 2026-09-08 20:59:06 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:65669 https://access.redhat.com/errata/RHSA-2026:65669
Comment 16 errata-xmlrpc 2026-09-08 21:03:12 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:65670 https://access.redhat.com/errata/RHSA-2026:65670
Comment 17 errata-xmlrpc 2026-09-09 02:13:19 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 Extended Update Support Long-Life Add-On

Via RHSA-2026:65757 https://access.redhat.com/errata/RHSA-2026:65757
Comment 18 errata-xmlrpc 2026-09-09 02:30:29 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-2026:65764 https://access.redhat.com/errata/RHSA-2026:65764
Comment 19 errata-xmlrpc 2026-09-09 02:41:48 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-2026:65765 https://access.redhat.com/errata/RHSA-2026:65765
Comment 20 errata-xmlrpc 2026-09-09 03:04:36 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:65766 https://access.redhat.com/errata/RHSA-2026:65766
Comment 21 errata-xmlrpc 2026-09-09 10:31:27 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:65888 https://access.redhat.com/errata/RHSA-2026:65888
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