Bug 2403770 (CVE-2025-11712) - CVE-2025-11712 thunderbird: firefox: An OBJECT tag type attribute overrode browser behavior on web resources without a content-type
Summary: CVE-2025-11712 thunderbird: firefox: An OBJECT tag type attribute overrode br...
Keywords:
Status: NEW
Alias: CVE-2025-11712
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: 2025-10-14 13:02 UTC by OSIDB Bzimport
Modified: 2025-10-22 19:49 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-2025:18154 0 None None None 2025-10-15 15:54:35 UTC
Red Hat Product Errata RHSA-2025:18155 0 None None None 2025-10-15 16:35:38 UTC
Red Hat Product Errata RHSA-2025:18285 0 None None None 2025-10-20 02:20:23 UTC
Red Hat Product Errata RHSA-2025:18320 0 None None None 2025-10-20 17:49:48 UTC
Red Hat Product Errata RHSA-2025:18321 0 None None None 2025-10-20 17:53:00 UTC
Red Hat Product Errata RHSA-2025:18983 0 None None None 2025-10-22 19:49:51 UTC

Description OSIDB Bzimport 2025-10-14 13:02:26 UTC 
A malicious page could have used the type attribute of an OBJECT tag to override the default browser behavior when encountering a web resource served without a content-type. This could have contributed to an XSS on a site that unsafely serves files without a content-type header. This vulnerability affects Firefox < 144, Firefox ESR < 140.4, Thunderbird < 144, and Thunderbird < 140.4.
Comment 1 errata-xmlrpc 2025-10-15 15:54:34 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2025:18154 https://access.redhat.com/errata/RHSA-2025:18154
Comment 2 errata-xmlrpc 2025-10-15 16:35:36 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:18155 https://access.redhat.com/errata/RHSA-2025:18155
Comment 3 errata-xmlrpc 2025-10-20 02:20:22 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2025:18285 https://access.redhat.com/errata/RHSA-2025:18285
Comment 4 errata-xmlrpc 2025-10-20 17:49:46 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2025:18320 https://access.redhat.com/errata/RHSA-2025:18320
Comment 5 errata-xmlrpc 2025-10-20 17:52:58 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:18321 https://access.redhat.com/errata/RHSA-2025:18321
Comment 6 errata-xmlrpc 2025-10-22 19:49:49 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2025:18983 https://access.redhat.com/errata/RHSA-2025:18983
Note You need to log in before you can comment on or make changes to this bug.