---
id: CVE-2026-17909
title: >-
  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
summary: >-
  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)
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'
cwe:
  - CWE-20
vendor: google
product: chrome
affected:
  - chrome < 151.0.7922.72
patched:
  - chrome 151.0.7922.72
published: '2026-07-30'
updated: '2026-09-21'
sourceUpdated: '2026-09-21T19:17:04.240'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-17909'
references:
  - url: >-
      https://chromereleases.googleblog.com/2026/07/stable-channel-update-for-desktop_0887107924.html
    label: chrome-cve-admin@google.com
  - url: 'https://issues.chromium.org/issues/501693236'
    label: chrome-cve-admin@google.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-07-30T18:02:59.037719Z'
epss: 0.00271
epssPercentile: 0.17183
ingestedAt: '2026-09-21T19:51:58.845Z'
---

## Overview

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)

## Affected

- `chrome < 151.0.7922.72`

## Remediation

Upgrade past the affected range:

- `chrome 151.0.7922.72`