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VulnerabilityPoC1 · 1 read

CVE-2026-91733

Sandbox Escape via Skia State Validation Flaw in Google Chrome <153.0.8010.47

CVSS 3.1
8.3 high
EPSS
<1%p25
Published
·
Modified
Analyze CVE-2026-91733 with Vani AIImpact, affected versions, exploitation status, mitigations and detection

Google Chrome versions prior to 153.0.8010.47 contain an improper state validation flaw (CWE-754) in Skia, the browser's core 2D graphics rendering library. A remote attacker who has already compromised the renderer process — for example by chaining a separate renderer memory-corruption bug — can trigger the flaw through a crafted HTML page and read memory outside the Chrome sandbox. This provides a sandbox-escape primitive that, when combined with an initial renderer exploit, breaks Chrome's core security boundary and can expose sensitive process memory. All users running Chrome older than 153.0.8010.47 are affected. Google rates the severity High, and there is currently no known public proof of concept and no indication of in-the-wild exploitation.

What to do: Update Google Chrome to version 153.0.8010.47 or later immediately — desktop Chrome normally self-updates, so verify the running version at chrome://settings/help. Enterprise admins should confirm the patched build has rolled out fleet-wide and check that update-deferral or pinning policies are not holding devices on older versions. Because this bug is a sandbox-escape stage typically chained with a separate renderer exploit, also update Chromium-based browsers (Edge, Brave, Opera, etc.) as vendors ship downstream patches.

ProductAffected
Google Chromeprior to 153.0.8010.47 (< 153.0.8010.47)
Estimated exposure
mass≈3 billion+ Chrome users worldwide — Chrome holds roughly two-thirds of the global browser market across desktop and mobile, giving an installed base in the billions, and essentially all of those installations were running a vulnerable version until the 153.0.8010.47 fix…

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

Description · NVD

Improper state validation in Skia in Google Chrome prior to 153.0.8010.47 allowed a remote attacker who had compromised the renderer process to read memory outside the sandbox via a crafted HTML page. (Chromium security severity: High)

Vendors
google
Products
chrome
Weakness
CWE-754
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

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