What is CVE-2026-17921?

CVE-2026-17921 is a medium-severity vulnerability in Google Chrome, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2026-07-30.

How severe is CVE-2026-17921?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Improper input validation in Google Chrome

CVE-2026-17921

Insufficient validation of untrusted input in Navigation in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer process to bypass navigation restrictions via a crafted HTML page. (Chromium securi…

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.

Affected products

Google Chrome — versions 151.0.7922.72

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

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

Frequently asked questions

What is CVE-2026-17921?: CVE-2026-17921 is a medium-severity vulnerability in Google Chrome, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2026-07-30.
How severe is CVE-2026-17921?: Medium severity. CVSS v3 base score is 6.5 out of 10.