CVE-2026-121223

Awaiting Analysis Awaiting Analysis - Queue

Media in Google Chrome Information Disclosure

Publication date: 2026-11-03

Last updated on: 2026-11-03

Assigner: Chrome

Description

Observable discrepancy in Media in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Medium)

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-11-03

Last Modified

2026-11-03

Generated

2026-11-04

AI Q&A

2026-11-04

EPSS Evaluated

N/A

NVD

CVE-2026-121223

EUVD

EUVD-2026-116301

Affected Vendors & Products

Vendor	Product	Version / Range
Google	Chrome	157.0.8103.38

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.

Attack-Flow Graph

Executive Summary

This vulnerability involves an observable discrepancy in the Media component of Google Chrome versions before 157.0.8103.38. A remote attacker could exploit this by creating a specially crafted HTML page to leak cross-origin data, meaning data from one website could be accessed by another.

Impact Analysis

If you use an affected version of Chrome, this vulnerability could allow attackers to steal sensitive data from other websites you visit, such as login credentials, personal information, or browsing history. It may also enable tracking or unauthorized access to private data.

Compliance Impact

This vulnerability could lead to data breaches, violating GDPR by exposing personal data without consent and HIPAA by leaking protected health information. Organizations using affected Chrome versions may face compliance violations, legal penalties, and reputational damage.

Mitigation Strategies

Update Google Chrome to version 157.0.8103.38 or later to address the vulnerability.

Hi! I’m here to help you understand CVE-2026-121223. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70

EPSS Chart

Security Radar

News mentioning this vulnerability

Loading related security news...