Same-origin policy bypass in the Networking: JAR component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.
References
| Link | Resource |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=2032604 | 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)
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History
20 May 2026, 14:41
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://bugzilla.mozilla.org/show_bug.cgi?id=2032604 - Permissions Required | |
| References | () https://www.mozilla.org/security/advisories/mfsa2026-46/ - Vendor Advisory | |
| References | () https://www.mozilla.org/security/advisories/mfsa2026-50/ - Vendor Advisory | |
| CPE | cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:* |
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| 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 Networking: JAR component. This vulnerability was fixed in Firefox 151 and Thunderbird 151. |
19 May 2026, 15:16
| Type | Values Removed | Values Added |
|---|---|---|
| CWE | CWE-346 | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 6.5 |
19 May 2026, 14:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-05-19 14:16
Updated : 2026-05-20 14:41
NVD link : CVE-2026-8971
Mitre link : CVE-2026-8971
CVE.ORG link : CVE-2026-8971
JSON object : View
Products Affected
mozilla
- firefox
- thunderbird
CWE
CWE-346
Origin Validation Error