IFrameSandbox Policy Bypass in Google Chrome Prior to

Publication date: 2026-04-08

Last updated on: 2026-04-13

Assigner: Chrome

Description

Policy bypass in IFrameSandbox in Google Chrome prior to 147.0.7727.55 allowed a remote attacker who convinced a user to engage in specific UI gestures to bypass navigation restrictions via a crafted HTML page. (Chromium security severity: Low)

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-04-08

Last Modified

2026-04-13

Generated

2026-07-06

AI Q&A

2026-04-09

EPSS Evaluated

2026-07-05

NVD

CVE-2026-5903

EUVD

EUVD-2026-20727

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 147.0.7727.55 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-693	The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.

Attack-Flow Graph

Executive Summary

This vulnerability is a policy bypass issue in the IFrameSandbox feature of Google Chrome versions prior to 147.0.7727.55. It allows a remote attacker to bypass navigation restrictions by convincing a user to perform specific user interface gestures on a specially crafted HTML page.

Impact Analysis

The vulnerability could allow an attacker to bypass navigation restrictions in the browser, potentially leading to unauthorized navigation or actions within the browser context. However, the severity of this issue is considered low.

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