CVE-2026-121194

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Missing Authorization in Google Chrome PDF Renderer

Publication date: 2026-11-03

Last updated on: 2026-11-03

Assigner: Chrome

Description

Missing authorization in SiteIsolation in Google Chrome prior to 157.0.8103.38 allowed a remote attacker who had compromised the renderer process to obtain sensitive information via a crafted PDF file. (Chromium security severity: Medium)

CVSS Scores

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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-2026-121194

EUVD

EUVD-2026-116294

Affected Vendors & Products

Vendor	Product	Version / Range
Google	Chrome	157.0.8103.38

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-862	The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

Attack-Flow Graph

Executive Summary

This vulnerability is a missing authorization issue in SiteIsolation in Google Chrome before version 157.0.8103.38. It allows a remote attacker who has already compromised the renderer process to access sensitive information by exploiting a crafted PDF file.

Impact Analysis

If you use an affected version of Chrome, an attacker could steal sensitive data like passwords or personal information if they trick you into opening a malicious PDF. This requires the attacker to first compromise the renderer process.

Mitigation Strategies

Update Google Chrome to version 157.0.8103.38 or later to address the missing authorization issue in SiteIsolation.

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