Is CVE-2026-16405 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-16405?

CVE-2026-16405 has a CVSS v3 severity of HIGH (7.5).

CVE-2026-16405 affects firefox.

Back

Description

Information disclosure in the Networking: WebSockets component. This vulnerability was fixed in Firefox 153 and Firefox ESR 140.13.