CVE-2026-74956

CRITICAL9.1

Published 2026-08-18 · Updated 2026-08-18 · Source security@mozilla.org

Description

Same-origin policy bypass in the DOM: Service Workers component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CWE-843

References

View on NVD

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