CVE-2025-8036
HIGHFirefox and Thunderbird - DNS Rebinding CORS Bypass
Title source: manualDescription
Thunderbird cached CORS preflight responses across IP address changes. This allowed circumventing CORS with DNS rebinding. This vulnerability was fixed in Firefox 141, Firefox ESR 140.1, Thunderbird 141, and Thunderbird 140.1.
References (6)
Core 6
Core References
Permissions Required
https://bugzilla.mozilla.org/show_bug.cgi?id=1960834
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-56/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-59/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-61/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-63/
Third Party Advisory, US Government Resource
https://www.kb.cert.org/vuls/id/652514
Scores
CVSS v3
8.1
EPSS
0.0027
EPSS Percentile
50.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-350
Status
published
Products (8)
mozilla/firefox
< 140.1.0
mozilla/firefox
< 141.0
Mozilla/Firefox
140.1 - 140.*
Mozilla/Firefox
141
mozilla/thunderbird
< 140.1.0
mozilla/thunderbird
< 141.0
Mozilla/Thunderbird
140.1 - 140.*
Mozilla/Thunderbird
141
Published
Jul 22, 2025
Tracked Since
Feb 18, 2026