Same-origin policy bypass in the DOM: Networking component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.
References
| Link | Resource |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=2038803 | Permissions Required |
| https://www.mozilla.org/security/advisories/mfsa2026-46/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2026-50/ | Vendor Advisory |
Configurations
Configuration 1 (hide)
|
History
20 May 2026, 14:53
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:* |
|
| References | () https://bugzilla.mozilla.org/show_bug.cgi?id=2038803 - Permissions Required | |
| References | () https://www.mozilla.org/security/advisories/mfsa2026-46/ - Vendor Advisory | |
| References | () https://www.mozilla.org/security/advisories/mfsa2026-50/ - Vendor Advisory | |
| First Time |
Mozilla thunderbird
Mozilla Mozilla firefox |
19 May 2026, 18:16
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
|
| Summary | (en) Same-origin policy bypass in the DOM: Networking component. This vulnerability was fixed in Firefox 151 and Thunderbird 151. |
19 May 2026, 17:16
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 9.1 |
| CWE | CWE-942 |
19 May 2026, 14:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-05-19 14:16
Updated : 2026-05-20 14:53
NVD link : CVE-2026-8948
Mitre link : CVE-2026-8948
CVE.ORG link : CVE-2026-8948
JSON object : View
Products Affected
mozilla
- firefox
- thunderbird
CWE
CWE-942
Permissive Cross-domain Policy with Untrusted Domains