What is CVE-2026-17920?

CVE-2026-17920 is a high-severity vulnerability in Google Chrome, classified under Use After Free. CVSS score: 8.8/10. Published 2026-07-30.

How severe is CVE-2026-17920?

High severity. CVSS v3 base score is 8.8 out of 10.

Use After Free in Google Chrome

CVE-2026-17920

Use after free in V8 in Google Chrome prior to 151.0.7922.72 allowed an attacker who convinced a user to install a malicious extension to execute arbitrary code inside a sandbox via a crafted Chrome Extension. (Chromium security severity…

Vulnerability class: Use-After-Free

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Google Chrome — versions 151.0.7922.72

Weakness classification (CWE)

CWE-416 — Use After Free

References

chrome-cve-admin@google.com
chrome-cve-admin@google.com

Frequently asked questions

What is CVE-2026-17920?: CVE-2026-17920 is a high-severity vulnerability in Google Chrome, classified under Use After Free. CVSS score: 8.8/10. Published 2026-07-30.
How severe is CVE-2026-17920?: High severity. CVSS v3 base score is 8.8 out of 10.