Bug 2517868 (CVE-2026-74944) - CVE-2026-74944 firefox: thunderbird: Use-after-free in the DOM: Core & HTML component
Summary: CVE-2026-74944 firefox: thunderbird: Use-after-free in the DOM: Core & HTML c...
Keywords:
Status: NEW
Alias: CVE-2026-74944
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 12:56 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 10:05:38 UTC
Red Hat Product Errata RHSA-2026:58898 0 None None None 2026-08-24 09:36:38 UTC
Red Hat Product Errata RHSA-2026:58899 0 None None None 2026-08-24 09:35:08 UTC
Red Hat Product Errata RHSA-2026:64813 0 None None None 2026-09-08 04:05:58 UTC
Red Hat Product Errata RHSA-2026:64814 0 None None None 2026-09-08 03:27:15 UTC
Red Hat Product Errata RHSA-2026:65103 0 None None None 2026-09-08 08:14:42 UTC
Red Hat Product Errata RHSA-2026:65105 0 None None None 2026-09-08 08:04:56 UTC
Red Hat Product Errata RHSA-2026:65110 0 None None None 2026-09-08 07:37:05 UTC
Red Hat Product Errata RHSA-2026:65111 0 None None None 2026-09-08 07:26:17 UTC
Red Hat Product Errata RHSA-2026:65158 0 None None None 2026-09-08 11:47:49 UTC
Red Hat Product Errata RHSA-2026:65442 0 None None None 2026-09-08 13:31:01 UTC
Red Hat Product Errata RHSA-2026:65669 0 None None None 2026-09-08 20:59:27 UTC
Red Hat Product Errata RHSA-2026:65670 0 None None None 2026-09-08 21:03:35 UTC
Red Hat Product Errata RHSA-2026:65766 0 None None None 2026-09-09 03:04:57 UTC
Red Hat Product Errata RHSA-2026:65888 0 None None None 2026-09-09 10:31:57 UTC

Description OSIDB Bzimport 2026-08-18 12:56:40 UTC 
Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, and Firefox ESR 153.1.
Comment 1 errata-xmlrpc 2026-08-24 09:35:07 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 09:36:37 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 10:05:37 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 03:27:14 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 04:05:57 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 07:26:16 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 07:37:04 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 08:04:56 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 08:14:41 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 11:47:48 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 11 errata-xmlrpc 2026-09-08 13:31:00 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 12 errata-xmlrpc 2026-09-08 20:59:26 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 13 errata-xmlrpc 2026-09-08 21:03:33 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 14 errata-xmlrpc 2026-09-09 03:04:56 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 15 errata-xmlrpc 2026-09-09 10:31:55 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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