CVE-2026-16387 PUBLISHED

Site isolation issue in the Networking component

Assigner: mozilla
Reserved: 20.07.2026 Published: 21.07.2026 Updated: 21.07.2026

Site isolation issue in the Networking component. This vulnerability was fixed in Firefox 153 and Firefox ESR 140.13.

Product Status

Vendor Mozilla
Product Firefox
Versions
  • unaffected from 140.13 to 140.* (incl.)
  • unaffected from 153 to * (incl.)

Credits

  • Atsushi Sada

References