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Google Chrome CVE-2026-87476

| EUVDEUVD-2026-74344 MEDIUM
Incorrect Authorization (CWE-863)
2026-09-09 Chrome GHSA-9fcf-35pp-33q8
6.5
CVSS 3.1 · Vendor: Chrome
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Severity by source

Vendor (Chrome) PRIMARY
6.5 MEDIUM
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
vuln.today AI
6.5 MEDIUM

Network-delivered via crafted HTML page, no attacker privileges needed, user must visit the page; impact confined to high confidentiality loss with no integrity or availability effect.

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

Primary rating from Vendor (Chrome).

CVSS VectorVendor: Chrome

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

Lifecycle Timeline

5
Metadata Corrected
Sep 09, 2026 - 16:40 vuln.today
tag: Authentication Bypass removed
Analysis Generated
Sep 09, 2026 - 15:47 vuln.today
Patch available
Sep 09, 2026 - 01:03 EUVD
CVE Published
Sep 09, 2026 - 00:09 cve.org
UNKNOWN (no severity yet)
CVE Published
Sep 09, 2026 - 00:09 cve.org
MEDIUM 6.5

DescriptionCVE.org

Incorrect authorization in Loader in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to obtain sensitive information via a crafted HTML page. (Chromium security severity: Medium)

AnalysisAI

Incorrect authorization in the Loader component of Google Chrome prior to 153.0.8010.36 enables a remote attacker to obtain sensitive information by luring a victim to a crafted HTML page. The CVSS base score of 6.5 and Chromium's own 'Medium' severity rating are consistent, reflecting the high confidentiality impact constrained by mandatory user interaction. …

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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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Vulnerability AssessmentAI

Exploitation User interaction is required: the victim must navigate to a crafted HTML page within an unpatched Chrome browser (any version prior to 153.0.8010.36). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS vector AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N frames this as a remotely triggerable, low-complexity information disclosure requiring only that the victim navigate to attacker-controlled content - a realistic social engineering threshold. … 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 Vendor-released patch: Chrome 153.0.8010.36. … Detailed patch versions, workarounds, and compensating controls in full report.

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CVE-2026-87476 vulnerability details – vuln.today

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