Unrated severityNVD Advisory· Published Aug 18, 2026· Updated Aug 18, 2026
CVE-2026-74956
CVE-2026-74956
Description
Same-origin policy bypass in the DOM: Service Workers component. This vulnerability was fixed in Firefox 154 and Firefox ESR 153.1.
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Affected products
1- Range: up to 154, ESR up to 153.1
Patches
Vulnerability mechanics
References
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