CVE-2026-87539

Analyzed Analyzed - Analysis Complete

Observable Discrepancy in Network in Google Chrome

Publication date: 2026-09-09

Last updated on: 2026-09-10

Assigner: Chrome

Description

Observable discrepancy in Network in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to obtain cross-origin data via a crafted HTML page. (Chromium security severity: Medium)

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-09-09

Last Modified

2026-09-10

Generated

2026-09-29

AI Q&A

2026-09-10

EPSS Evaluated

2026-09-27

NVD

CVE-2026-87539

EUVD

EUVD-2026-74352

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 153.0.8010.36 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-203	The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.

Attack-Flow Graph

Executive Summary

This vulnerability in Google Chrome prior to version 153.0.8010.36 allows a remote attacker to exploit observable discrepancies in network behavior to obtain cross-origin data. This means an attacker could potentially access data from another website or domain while a user is on a crafted HTML page.

Detection Guidance

This vulnerability involves observable discrepancies in Google Chrome's network handling. Detection may require monitoring network traffic for unusual cross-origin data transfers or inspecting Chrome's behavior with crafted HTML pages. No specific commands are provided in the available context.

Impact Analysis

This vulnerability could allow an attacker to steal sensitive information such as cookies, session tokens, or other data from websites you visit while you are on a malicious page. It may also enable unauthorized access to restricted content or user data across different domains.

Compliance Impact

This vulnerability allows a remote attacker to obtain cross-origin data via a crafted HTML page, which could lead to unauthorized access to sensitive user information. This may violate data protection principles under GDPR and HIPAA, depending on the data exposed.

Mitigation Strategies

Update Google Chrome to version 153.0.8010.36 or later to address the vulnerability.

Hi! I’m here to help you understand CVE-2026-87539. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70