CVE-2026-17909

Analyzed Analyzed - Analysis Complete

Insufficient Input Validation in Google Chrome Isolated Web Apps

Publication date: 2026-07-30

Last updated on: 2026-08-03

Assigner: Chrome

Description

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)

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-07-30

Last Modified

2026-08-03

Generated

2026-08-19

AI Q&A

2026-07-30

EPSS Evaluated

2026-08-18

NVD

CVE-2026-17909

EUVD

EUVD-2026-50658

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 151.0.7922.72 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-20	The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Attack-Flow Graph

Executive Summary

This vulnerability involves insufficient validation of untrusted input in Isolated Web Apps within Google Chrome versions before 151.0.7922.72. A remote attacker could exploit this by sending malicious network traffic to leak data from different origins.

Detection Guidance

This vulnerability involves insufficient validation in Isolated Web Apps in Google Chrome. Detection requires checking Chrome version and monitoring for unusual cross-origin data leaks. Ensure Chrome is updated to version 151.0.7922.72 or later to mitigate the issue.

Impact Analysis

If you use an affected version of Google Chrome, a remote attacker might access sensitive cross-origin data due to improper input validation. This could lead to unauthorized data exposure or privacy breaches.

Compliance Impact

This vulnerability involves insufficient validation of untrusted input in Isolated Web Apps in Google Chrome, which could allow a remote attacker to leak cross-origin data via malicious network traffic. While this does not directly specify compliance impacts, such data leaks could potentially violate privacy requirements under GDPR or HIPAA if sensitive information is exposed.

Mitigation Strategies

Update Google Chrome to version 151.0.7922.72 or later to address the vulnerability.

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