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Google Chrome EUVDEUVD-2026-74515

| CVE-2026-87651 MEDIUM
Incorrect Authorization (CWE-863)
2026-09-09 Chrome GHSA-g7pv-92gh-724g
4.3
CVSS 3.1 · Vendor: Chrome
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Severity by source

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

Cross-origin data access constitutes a scope change (S:C) affecting another origin's security domain; C:H reflects potentially sensitive session data, consistent with Chromium's 'High' severity.

3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:H/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
Low
Integrity
None
Availability
None

Lifecycle Timeline

5
Metadata Corrected
Sep 09, 2026 - 17:40 vuln.today
tag: Authentication Bypass removed
Analysis Generated
Sep 09, 2026 - 16:51 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 4.3

DescriptionCVE.org

Incorrect authorization in Paint in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to obtain cross-origin data via a crafted HTML page. (Chromium security severity: High)

AnalysisAI

Incorrect authorization in Chrome's Paint rendering component (versions prior to 153.0.8010.36) allows a remote attacker to read cross-origin data by directing a user to a crafted HTML page. The flaw (CWE-863) bypasses same-origin policy enforcement within the Paint subsystem, exposing rendered or pixel-level data from other origins to the attacking script. …

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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 Exploitation requires the victim to actively visit a crafted HTML page using Google Chrome prior to 153.0.8010.36 - mandatory user interaction (UI:R) is the primary limiting factor. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The NVD-assigned CVSS 4.3 (S:U/C:L) materially understates risk relative to Chromium's own 'High' severity label. … 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 Upgrade to Google Chrome 153.0.8010.36 or later; this is the vendor-confirmed patched release per the stable channel advisory at https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0808145027.html. … Detailed patch versions, workarounds, and compensating controls in full report.

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EUVD-2026-74515 vulnerability details – vuln.today

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