What is CVE-2026-17909?

CVE-2026-17909 is a medium-severity vulnerability in Google Chrome, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2026-07-30.

How severe is CVE-2026-17909?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Improper input validation in Google Chrome

CVE-2026-17909

Insufficient validation of untrusted input in Isolated Web Apps in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to leak cross-origin data via malicious network traffic. (Chromium security severity: Low)

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

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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-2026-17909?: CVE-2026-17909 is a medium-severity vulnerability in Google Chrome, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2026-07-30.
How severe is CVE-2026-17909?: Medium severity. CVSS v3 base score is 5.3 out of 10.