What is CVE-2026-19156?

CVE-2026-19156 is a high-severity vulnerability in Google Chrome, classified under Heap-based Buffer Overflow. CVSS score: 7.5/10. Published 2026-08-06.

How severe is CVE-2026-19156?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Google Chrome

CVE-2026-19156

Heap buffer overflow in Base in Google Chrome prior to 151.0.7922.109 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted Chrome Extension. (Chromium security sever…

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Google Chrome — versions 151.0.7922.109

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

References

chrome-cve-admin@google.com (Release Notes, Vendor Advisory)
chrome-cve-admin@google.com (Permissions Required)

Frequently asked questions

What is CVE-2026-19156?: CVE-2026-19156 is a high-severity vulnerability in Google Chrome, classified under Heap-based Buffer Overflow. CVSS score: 7.5/10. Published 2026-08-06.
How severe is CVE-2026-19156?: High severity. CVSS v3 base score is 7.5 out of 10.