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CVE-2026-8971
published 2026-05-19

CVE-2026-8971: Same-origin policy bypass in the Networking: JAR component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.

medium6.5CVSS 3.1
AVNACLPRNUINSUCLILAN
Same-origin policy bypass in the Networking: JAR component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.

Affected

4 ranges
VendorProductVersion rangeFixed in
mozillafirefox< Firefox 151Firefox 151
mozillafirefox< 151.0.0151.0.0
mozillathunderbird< Thunderbird 151Thunderbird 151
mozillathunderbird< 151.0.0151.0.0