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Google Chrome CVE-2026-87629

| EUVDEUVD-2026-74430 MEDIUM
Incorrect Authorization (CWE-863)
2026-09-09 Chrome GHSA-gc8v-g84j-mgf9
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 delivery via crafted HTML, no attacker privileges needed, user interaction required via social engineering; confidentiality-only impact 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 - 17:40 vuln.today
tag: Authentication Bypass removed
Analysis Generated
Sep 09, 2026 - 16:46 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 Sources in Google Chrome prior to 153.0.8010.36 allowed a remote attacker leveraging social engineering to leak sensitive information via a crafted HTML page. (Chromium security severity: Low)

AnalysisAI

Sensitive information disclosure in Google Chrome's Sources component exposes arbitrary sensitive data to remote attackers who can direct a user to a crafted HTML page. The flaw, fixed in Chrome 153.0.8010.36, stems from incorrect authorization checks (CWE-863) in the Sources subsystem - notably the same release that patched a cluster of higher-severity sandbox-escape RCEs. …

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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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Impact
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Vulnerability AssessmentAI

Exploitation Exploitation requires the victim to visit an attacker-controlled HTML page, meaning social engineering (phishing, malicious ad, forum link) is a prerequisite - the CVSS UI:R metric and the description's explicit mention of social engineering both confirm this. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment Real-world risk is assessed as moderate-low despite the NVD CVSS 6.5 (C:H). … 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, released via the Chrome stable channel on or around September 8, 2026. … Detailed patch versions, workarounds, and compensating controls in full report.

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CVE-2026-87629 vulnerability details – vuln.today

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