---
id: CVE-2026-5919
title: >-
  Insufficient validation of untrusted input in WebSockets in Google Chrome
  prior to 147.0.7727.55 allowed a remote attacker who had compromised the
  renderer process to bypass same origin policy via a crafted HTML page
summary: >-
  Insufficient validation of untrusted input in WebSockets in Google Chrome
  prior to 147.0.7727.55 allowed a remote attacker who had compromised the
  renderer process to bypass same origin policy via a crafted HTML page.
  (Chromium security …
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N'
cwe:
  - CWE-20
vendor: google
product: chrome
affected:
  - chrome < 147.0.7727.55
patched:
  - chrome 147.0.7727.55
published: '2026-04-08'
updated: '2026-07-24'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-5919'
references:
  - url: >-
      https://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop.html
    label: chrome-cve-admin@google.com
  - url: 'https://issues.chromium.org/issues/483423893'
    label: chrome-cve-admin@google.com
tags:
  - nvd
epss: 0.0019
epssPercentile: 0.08957
ingestedAt: '2026-07-24T08:22:37.648Z'
---

## Overview

Insufficient validation of untrusted input in WebSockets in Google Chrome prior to 147.0.7727.55 allowed a remote attacker who had compromised the renderer process to bypass same origin policy via a crafted HTML page. (Chromium security severity: Low)

## Affected

- `chrome < 147.0.7727.55`

## Remediation

Upgrade past the affected range:

- `chrome 147.0.7727.55`