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Vulnerability3 · 2 reads

CVE-2026-91740

Cross-Origin Data Leak via Uninitialized Resource in Skia in Google Chrome

CVSS 3.1
4.3 medium
EPSS
—
Published
·
Modified
Analyze CVE-2026-91740 with Vani AIImpact, affected versions, exploitation status, mitigations and detection

CVE-2026-91740 is an uninitialized resource flaw (CWE-908) in the Skia graphics library used by Google Chrome, fixed in the Chrome 153 stable update (version 153.0.8010.47) that resolved 42 security flaws. A remote attacker triggers the bug by luring a victim to open a crafted HTML page, which causes Skia to expose uninitialized data during page rendering. Successful exploitation lets the attacker read cross-origin data from the victim's browser session, violating the browser's same-origin protections and potentially exposing content from other websites the victim has visited. All users running Chrome versions prior to 153.0.8010.47 are affected, though Chrome's auto-update mechanism typically narrows the unpatched window. Chromium rates the issue High severity (CVSS 3.1: 4.3, medium, user interaction required); it is not in the CISA KEV catalog, and no public proof of concept or in-the-wild exploitation is known.

What to do: Update Google Chrome to version 153.0.8010.47 or later on all desktops and verify at chrome://settings/help. Enterprise and education admins should confirm their update policies have pushed the fixed build and expedite any devices lagging behind. Users of other Chromium-based browsers that bundle Skia (e.g., Edge, Brave, Opera) should also apply the latest updates from those vendors, since the underlying engine flaw is inherited.

ProductAffected
Google Chromeprior to 153.0.8010.47 (< 153.0.8010.47)
Estimated exposure
mass≈3 billion+ Chrome users globally; likely tens to hundreds of millions of unpatched installs in the days following release — Chrome holds roughly 60-65% of the global browser market across an estimated 5 billion internet users, so the entire install base was exposed before auto-updates rolled out.

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

Description · NVD

Uninitialized resource in Skia in Google Chrome prior to 153.0.8010.47 allowed a remote attacker to obtain cross-origin data via a crafted HTML page. (Chromium security severity: High)

Vendors
google
Products
chrome
Weakness
CWE-908
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

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