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Google Chrome CVE-2026-84355

| EUVDEUVD-2026-69742 LOW
Incorrect Authorization (CWE-863)
2026-09-02 chrome-cve-admin@google.com GHSA-9gfv-p3jj-4mw9
3.1
CVSS 3.1 · Vendor: google

Severity by source

Vendor (google) PRIMARY
3.1 LOW
AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
vuln.today AI
3.1 LOW

AC:H reflects mandatory renderer-compromise prerequisite; C:L only since impact is cross-origin read access; no integrity or availability impact applies.

3.1 AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
4.0 AV:N/AC:H/AT:P/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (google).

CVSS VectorVendor: google

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

Lifecycle Timeline

5
Metadata Corrected
Sep 02, 2026 - 12:40 vuln.today
tag: Authentication Bypass removed
Analysis Generated
Sep 02, 2026 - 11:41 vuln.today
Patch available
Sep 02, 2026 - 02:01 EUVD
CVE Published
Sep 02, 2026 - 00:18 cve.org
UNKNOWN (no severity yet)
CVE Published
Sep 02, 2026 - 00:18 cve.org
LOW 3.1

DescriptionCVE.org

Incorrect authorization in Navigation in Google Chrome prior to 152.0.7977.75 allowed a remote attacker who had compromised the renderer process to bypass web origin policy via a crafted HTML page. (Chromium security severity: Medium)

AnalysisAI

Incorrect authorization in Chrome's Navigation component allows a remote attacker who has already compromised the renderer process to bypass the web same-origin policy via a crafted HTML page. Affected versions are all Chrome releases prior to 152.0.7977.75. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Persist
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Impact
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Vulnerability AssessmentAI

Exploitation Exploitation requires two cumulative conditions: (1) the victim must visit or be redirected to a crafted HTML page served by the attacker (UI:R), and (2) the attacker must have already achieved code execution within Chrome's renderer process via a separate, independent vulnerability - the renderer compromise is a hard prerequisite that this CVE alone does not provide. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The real-world risk of this vulnerability is constrained. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Update Google Chrome to version 152.0.7977.75 or later via the browser's built-in update mechanism (Settings → Help → About Google Chrome) or via organizational deployment tooling. … Detailed patch versions, workarounds, and compensating controls in full report.

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CVE-2026-84355 vulnerability details – vuln.today

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