cvedb.io
CVE-2026-12304
CRITICAL · CVSS 9.1
EPSS exploitation probability: 0%
Published 2026-06-16T13:16:30.643 · Last modified 2026-06-17T15:12:45.233

Summary

Same-origin policy bypass in the Networking: Cookies component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.

Affected products

mozilla — firefox

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.