Bug 2382716 (CVE-2025-8036) - CVE-2025-8036 firefox: thunderbird: DNS rebinding circumvents CORS
Summary: CVE-2025-8036 firefox: thunderbird: DNS rebinding circumvents CORS
Keywords:
Status: NEW
Alias: CVE-2025-8036
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: 2025-07-22 21:02 UTC by OSIDB Bzimport
Modified: 2025-09-01 08:28 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description OSIDB Bzimport 2025-07-22 21:02:27 UTC 
Thunderbird cached CORS preflight responses across IP address changes. This allowed circumventing CORS with DNS rebinding. This vulnerability affects Firefox < 141, Firefox ESR < 140.1, Thunderbird < 141, and Thunderbird < 140.1.
Note You need to log in before you can comment on or make changes to this bug.