Race Condition in WebRTC in Google Chrome on Windows

Publication date: 2026-05-28

Last updated on: 2026-05-29

Assigner: Chrome

Description

Race in WebRTC in Google Chrome on Windows prior to 148.0.7778.216 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: High)

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-05-28

Last Modified

2026-05-29

Generated

2026-07-09

AI Q&A

2026-05-29

EPSS Evaluated

2026-07-08

NVD

CVE-2026-9959

EUVD

EUVD-2026-33101

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 148.0.7778.216 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-362	The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

Attack-Flow Graph

Executive Summary

This vulnerability is a race condition in WebRTC within Google Chrome on Windows versions prior to 148.0.7778.216. It allows a remote attacker to leak cross-origin data by using a specially crafted HTML page.

Impact Analysis

The vulnerability can lead to unauthorized disclosure of data from other origins, potentially exposing sensitive information to attackers who exploit the race condition via a malicious web page.

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