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Vulnerability3 · 2 reads

CVE-2026-91728

Integer Overflow in V8 Enables Sandbox Code Execution in Google Chrome

CVSS 3.1
9.6 critical
EPSS
—
Published
·
Modified
Analyze CVE-2026-91728 with Vani AIImpact, affected versions, exploitation status, mitigations and detection

CVE-2026-91728 is an integer overflow (CWE-190) in the V8 JavaScript engine used by Google Chrome, fixed in version 153.0.8010.47. The flaw is triggered when a user visits a crafted HTML page, where malformed JavaScript causes an integer overflow leading to memory corruption in the renderer. Successful exploitation allows a remote attacker to execute arbitrary code inside the browser sandbox, and Chromium rates the severity High; the CVSS 3.1 score of 9.6 reflects high impact to confidentiality, integrity, and availability if chained with a separate sandbox escape. All users running Chrome versions prior to 153.0.8010.47 on any platform are affected. No public proof-of-concept is known, the flaw is not on CISA's KEV list, and no exploitation in the wild has been reported.

What to do: Update Google Chrome to version 153.0.8010.47 or later immediately and verify via Help > About Chrome; enterprises should confirm auto-update policies are not delaying rollout. Because the flaw resides in V8, users of other Chromium-based browsers (Edge, Brave, Opera, Vivaldi) should apply those vendors' updates as the fix propagates. Exploitation requires user interaction with a malicious page, so blocking known-bad links adds defense-in-depth, but patching is the definitive mitigation.

ProductAffected
Google Chromeprior to 153.0.8010.47 (< 153.0.8010.47)
Estimated exposure
mass≈1–3 billion Chrome installations; likely tens to hundreds of millions unpatched at any given moment — Chrome holds roughly 60–65% of the global browser market across desktop and mobile with an installed base in the billions, so even a partial lag in auto-updates leaves a very large attackable population.

Order-of-magnitude estimate by the model from install counts, market share and public scan data it knows; verify before quoting.

Description · NVD

Integer overflow in V8 in Google Chrome prior to 153.0.8010.47 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)

Vendors
google
Products
chrome
Weakness
CWE-190
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

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