CVE intelligence

CVE-2026-78900

Vulnerability intelligence

Published Aug 25, 2026Sources checked Sep 12, 2026

9.6CRITICALCVSS out of 10

What this means

Review the available evidence

CVE-2026-78900 and is rated Critical severity with a CVSS score of 9.6. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

CISA KEVNot listedBased on the latest collected catalog

EPSS0.4%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-78900?

Improper input validation in Media in Google Chrome prior to 152.0.7977.65 allowed a remote attacker to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)