Question 1

What is CVE-2026-16387 — CVE-2026-16387?

Accepted Answer

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

Question 2

What is the authoritative source for CVE-2026-16387?

Accepted Answer

CVE-2026-16387 (CVE-2026-16387) is catalogued in NVD + CISA KEV + FIRST EPSS and curated for EU compliance use cases by SQUR.

CVE-2026-16387CVE-2026-16387

Description