Bug 2460101 (CVE-2026-6763) - CVE-2026-6763 firefox: thunderbird: Mitigation bypass in the File Handling component
Summary: CVE-2026-6763 firefox: thunderbird: Mitigation bypass in the File Handling co...
Keywords:
Status: NEW
Alias: CVE-2026-6763
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:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-04-21 14:02 UTC by OSIDB Bzimport
Modified: 2026-05-20 07:32 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-2026:10757 0 None None None 2026-04-27 10:44:27 UTC
Red Hat Product Errata RHSA-2026:10766 0 None None None 2026-04-27 12:29:06 UTC
Red Hat Product Errata RHSA-2026:10767 0 None None None 2026-04-27 12:17:05 UTC
Red Hat Product Errata RHSA-2026:12285 0 None None None 2026-04-30 13:51:03 UTC
Red Hat Product Errata RHSA-2026:13537 0 None None None 2026-05-04 16:48:20 UTC
Red Hat Product Errata RHSA-2026:15892 0 None None None 2026-05-11 02:05:02 UTC
Red Hat Product Errata RHSA-2026:17477 0 None None None 2026-05-14 08:24:38 UTC
Red Hat Product Errata RHSA-2026:17687 0 None None None 2026-05-14 19:48:13 UTC
Red Hat Product Errata RHSA-2026:17688 0 None None None 2026-05-14 20:14:31 UTC
Red Hat Product Errata RHSA-2026:17689 0 None None None 2026-05-14 19:53:32 UTC
Red Hat Product Errata RHSA-2026:17690 0 None None None 2026-05-14 19:43:35 UTC
Red Hat Product Errata RHSA-2026:19041 0 None None None 2026-05-19 13:06:14 UTC
Red Hat Product Errata RHSA-2026:19131 0 None None None 2026-05-19 16:06:08 UTC
Red Hat Product Errata RHSA-2026:19201 0 None None None 2026-05-19 18:01:24 UTC
Red Hat Product Errata RHSA-2026:19348 0 None None None 2026-05-19 21:38:07 UTC
Red Hat Product Errata RHSA-2026:19461 0 None None None 2026-05-20 02:00:50 UTC
Red Hat Product Errata RHSA-2026:19462 0 None None None 2026-05-20 03:05:54 UTC
Red Hat Product Errata RHSA-2026:19463 0 None None None 2026-05-20 02:19:24 UTC
Red Hat Product Errata RHSA-2026:19464 0 None None None 2026-05-20 03:01:17 UTC
Red Hat Product Errata RHSA-2026:19465 0 None None None 2026-05-20 02:08:41 UTC
Red Hat Product Errata RHSA-2026:19466 0 None None None 2026-05-20 03:03:51 UTC
Red Hat Product Errata RHSA-2026:19467 0 None None None 2026-05-20 02:53:16 UTC
Red Hat Product Errata RHSA-2026:19468 0 None None None 2026-05-20 02:51:41 UTC
Red Hat Product Errata RHSA-2026:19469 0 None None None 2026-05-20 02:59:21 UTC
Red Hat Product Errata RHSA-2026:19542 0 None None None 2026-05-20 07:32:34 UTC

Description OSIDB Bzimport 2026-04-21 14:02:56 UTC 
Mitigation bypass in the File Handling component. This vulnerability was fixed in Firefox 150 and Firefox ESR 140.10.
Comment 1 errata-xmlrpc 2026-04-27 10:44:26 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:10757 https://access.redhat.com/errata/RHSA-2026:10757
Comment 2 errata-xmlrpc 2026-04-27 12:17:04 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:10767 https://access.redhat.com/errata/RHSA-2026:10767
Comment 3 errata-xmlrpc 2026-04-27 12:29:05 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:10766 https://access.redhat.com/errata/RHSA-2026:10766
Comment 4 errata-xmlrpc 2026-04-30 13:51:01 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:12285 https://access.redhat.com/errata/RHSA-2026:12285
Comment 5 errata-xmlrpc 2026-05-04 16:48:19 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:13537 https://access.redhat.com/errata/RHSA-2026:13537
Comment 6 errata-xmlrpc 2026-05-11 02:05:01 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:15892 https://access.redhat.com/errata/RHSA-2026:15892
Comment 7 errata-xmlrpc 2026-05-14 08:24:37 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-2026:17477 https://access.redhat.com/errata/RHSA-2026:17477
Comment 8 errata-xmlrpc 2026-05-14 19:43:34 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:17690 https://access.redhat.com/errata/RHSA-2026:17690
Comment 9 errata-xmlrpc 2026-05-14 19:48:12 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Via RHSA-2026:17687 https://access.redhat.com/errata/RHSA-2026:17687
Comment 10 errata-xmlrpc 2026-05-14 19:53:31 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:17689 https://access.redhat.com/errata/RHSA-2026:17689
Comment 11 errata-xmlrpc 2026-05-14 20:14:29 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:17688 https://access.redhat.com/errata/RHSA-2026:17688
Comment 12 errata-xmlrpc 2026-05-19 13:06:13 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:19041 https://access.redhat.com/errata/RHSA-2026:19041
Comment 13 errata-xmlrpc 2026-05-19 16:06:07 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:19131 https://access.redhat.com/errata/RHSA-2026:19131
Comment 14 errata-xmlrpc 2026-05-19 18:01:22 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:19201 https://access.redhat.com/errata/RHSA-2026:19201
Comment 15 errata-xmlrpc 2026-05-19 21:38:05 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:19348 https://access.redhat.com/errata/RHSA-2026:19348
Comment 16 errata-xmlrpc 2026-05-20 02:00:48 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:19461 https://access.redhat.com/errata/RHSA-2026:19461
Comment 17 errata-xmlrpc 2026-05-20 02:08:40 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-2026:19465 https://access.redhat.com/errata/RHSA-2026:19465
Comment 18 errata-xmlrpc 2026-05-20 02:19:23 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:19463 https://access.redhat.com/errata/RHSA-2026:19463
Comment 19 errata-xmlrpc 2026-05-20 02:51:40 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Via RHSA-2026:19468 https://access.redhat.com/errata/RHSA-2026:19468
Comment 20 errata-xmlrpc 2026-05-20 02:53:15 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-2026:19467 https://access.redhat.com/errata/RHSA-2026:19467
Comment 21 errata-xmlrpc 2026-05-20 02:59:18 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Extended Update Support

Via RHSA-2026:19469 https://access.redhat.com/errata/RHSA-2026:19469
Comment 22 errata-xmlrpc 2026-05-20 03:01:16 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Extended Update Support

Via RHSA-2026:19464 https://access.redhat.com/errata/RHSA-2026:19464
Comment 23 errata-xmlrpc 2026-05-20 03:03:50 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-2026:19466 https://access.redhat.com/errata/RHSA-2026:19466
Comment 24 errata-xmlrpc 2026-05-20 03:05:52 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:19462 https://access.redhat.com/errata/RHSA-2026:19462
Comment 25 errata-xmlrpc 2026-05-20 07:32:33 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-2026:19542 https://access.redhat.com/errata/RHSA-2026:19542
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