Bug 2476475 (CVE-2026-8391) - CVE-2026-8391 firefox: thunderbird: Other issue in the JavaScript Engine component
Summary: CVE-2026-8391 firefox: thunderbird: Other issue in the JavaScript Engine comp...
Keywords:
Status: NEW
Alias: CVE-2026-8391
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: 2026-05-12 14:02 UTC by OSIDB Bzimport
Modified: 2026-06-22 02:29 UTC (History)
7 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-2026:21378 0 None None None 2026-05-27 16:41:22 UTC
Red Hat Product Errata RHSA-2026:21380 0 None None None 2026-05-27 16:05:32 UTC
Red Hat Product Errata RHSA-2026:21381 0 None None None 2026-05-27 16:07:28 UTC
Red Hat Product Errata RHSA-2026:21382 0 None None None 2026-05-27 16:01:44 UTC
Red Hat Product Errata RHSA-2026:22325 0 None None None 2026-06-01 15:28:02 UTC
Red Hat Product Errata RHSA-2026:22643 0 None None None 2026-06-03 00:49:01 UTC
Red Hat Product Errata RHSA-2026:26174 0 None None None 2026-06-16 06:06:22 UTC
Red Hat Product Errata RHSA-2026:26268 0 None None None 2026-06-16 12:17:12 UTC
Red Hat Product Errata RHSA-2026:26269 0 None None None 2026-06-16 11:59:10 UTC
Red Hat Product Errata RHSA-2026:26270 0 None None None 2026-06-16 11:59:40 UTC
Red Hat Product Errata RHSA-2026:26491 0 None None None 2026-06-17 05:42:44 UTC
Red Hat Product Errata RHSA-2026:26492 0 None None None 2026-06-17 05:57:07 UTC
Red Hat Product Errata RHSA-2026:26493 0 None None None 2026-06-17 05:51:27 UTC
Red Hat Product Errata RHSA-2026:26521 0 None None None 2026-06-17 08:02:20 UTC
Red Hat Product Errata RHSA-2026:26536 0 None None None 2026-06-17 10:00:38 UTC
Red Hat Product Errata RHSA-2026:26539 0 None None None 2026-06-17 10:24:57 UTC
Red Hat Product Errata RHSA-2026:26551 0 None None None 2026-06-17 10:56:03 UTC
Red Hat Product Errata RHSA-2026:26606 0 None None None 2026-06-17 14:34:41 UTC
Red Hat Product Errata RHSA-2026:26629 0 None None None 2026-06-17 15:21:17 UTC
Red Hat Product Errata RHSA-2026:26630 0 None None None 2026-06-17 15:39:44 UTC
Red Hat Product Errata RHSA-2026:27715 0 None None None 2026-06-22 02:29:30 UTC

Description OSIDB Bzimport 2026-05-12 14:02:20 UTC 
Other issue in the JavaScript Engine component. This vulnerability was fixed in Firefox 150.0.3.
Comment 1 errata-xmlrpc 2026-05-27 16:01:43 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:21382 https://access.redhat.com/errata/RHSA-2026:21382
Comment 2 errata-xmlrpc 2026-05-27 16:05:30 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:21380 https://access.redhat.com/errata/RHSA-2026:21380
Comment 3 errata-xmlrpc 2026-05-27 16:07:27 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:21381 https://access.redhat.com/errata/RHSA-2026:21381
Comment 4 errata-xmlrpc 2026-05-27 16:41:20 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:21378 https://access.redhat.com/errata/RHSA-2026:21378
Comment 5 errata-xmlrpc 2026-06-01 15:28:01 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:22325 https://access.redhat.com/errata/RHSA-2026:22325
Comment 6 errata-xmlrpc 2026-06-03 00:48:59 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:22643 https://access.redhat.com/errata/RHSA-2026:22643
Comment 8 errata-xmlrpc 2026-06-16 06:06:20 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:26174 https://access.redhat.com/errata/RHSA-2026:26174
Comment 9 errata-xmlrpc 2026-06-16 11:59:08 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:26269 https://access.redhat.com/errata/RHSA-2026:26269
Comment 10 errata-xmlrpc 2026-06-16 11:59:39 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-2026:26270 https://access.redhat.com/errata/RHSA-2026:26270
Comment 11 errata-xmlrpc 2026-06-16 12:17:11 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-2026:26268 https://access.redhat.com/errata/RHSA-2026:26268
Comment 12 errata-xmlrpc 2026-06-17 05:42:43 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:26491 https://access.redhat.com/errata/RHSA-2026:26491
Comment 13 errata-xmlrpc 2026-06-17 05:51:25 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:26493 https://access.redhat.com/errata/RHSA-2026:26493
Comment 14 errata-xmlrpc 2026-06-17 05:57:06 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:26492 https://access.redhat.com/errata/RHSA-2026:26492
Comment 15 errata-xmlrpc 2026-06-17 08:02:19 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:26521 https://access.redhat.com/errata/RHSA-2026:26521
Comment 16 errata-xmlrpc 2026-06-17 10:00:36 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-2026:26536 https://access.redhat.com/errata/RHSA-2026:26536
Comment 17 errata-xmlrpc 2026-06-17 10:24:56 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:26539 https://access.redhat.com/errata/RHSA-2026:26539
Comment 18 errata-xmlrpc 2026-06-17 10:56:02 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2026:26551 https://access.redhat.com/errata/RHSA-2026:26551
Comment 19 errata-xmlrpc 2026-06-17 14:34:40 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-2026:26606 https://access.redhat.com/errata/RHSA-2026:26606
Comment 20 errata-xmlrpc 2026-06-17 15:21:15 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-2026:26629 https://access.redhat.com/errata/RHSA-2026:26629
Comment 21 errata-xmlrpc 2026-06-17 15:39:43 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-2026:26630 https://access.redhat.com/errata/RHSA-2026:26630
Comment 22 errata-xmlrpc 2026-06-22 02:29:29 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:27715 https://access.redhat.com/errata/RHSA-2026:27715
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