CVE-2026-93378NVD

Vulnerability Summary

Missing authorization in Storage in Google Chrome prior to 153.0.8010.52 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted PDF file. (Chromium security severity: Medium)

Severity Level

LOW(3.1)

Published Date

Sep 17, 2026

Last Modified

Sep 21, 2026

Exploitation Status

No confirmed exploitation yet

EPSS Score (30-Day)

0.21%Probability

Root Weakness (CWE)

CWE-862: Missing Authorization ↗

The software does not perform an authorization check when an actor attempts to access a resource or perform an action.

CVSS v3.1 Base Metrics — Score 3.1 (LOW)

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

ConfidentialityLow

IntegrityNone

AvailabilityNone

Affected & Patched Versions

Affected Versions

Google Chrome < 153.0.8010.52

Patched Versions

Google Chrome 153.0.8010.52

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