Disclosure summary
Google Chromium V8 contains a type confusion vulnerability that allows a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.
CISA remediation guidance
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
Rapid7 Blog · RSS-828858f0eff18253f4346e69969cec04584
Open original source · Updated Sep 08, 2026
Patch Tuesday - September 2026
CVE mention in publisher metadata; check the original affected versions.
Original records & references
PUBLISHED 2026-09-04T00:00:00-04:00
MODIFIED 2026-09-04T00:00:00-04:00
INGESTED 2026-10-06T11:42:57-04:00