Mitigation Bypass in Firefox by Mozilla Corporation

CVE-2026-100808

What is CVE-2026-100808?

A significant vulnerability in the Firefox browser's DOM: Service Workers component has been identified, allowing potential bypass of existing mitigations. This security flaw can lead to unintended access or interactions with service workers, potentially compromising user data or system integrity. The issue has been addressed in Firefox ESR version 153.4 and Firefox version 157, ensuring enhanced protection against malicious exploitation. Users are encouraged to update to these versions to mitigate risks associated with this vulnerability.

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