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CVE-2026-3545 is a high-severity insufficient data validation flaw in the Navigation component of Google Chrome prior to 145.0.7632.159. The vulnerability can be triggered by a crafted HTML page and allows a compromised renderer process to trick the browser into reading local files, resulting in a sandbox escape. The issue stems from improper validation of data crossing trust boundaries within Chrome’s navigation handling, enabling a less-trusted renderer context to induce privileged browser behavior that should have been blocked by the sandbox model.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
20 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical sandbox escape vulnerability in Google Chrome's Navigation component that could allow the browser to be tricked into reading local files from a user's system.
A critical Chrome sandbox escape vulnerability caused by insufficient data validation in Navigation, allowing a compromised renderer to trick the browser into reading local files via crafted HTML pages.
High-severity insufficient data validation vulnerability in Google Chrome Navigation component.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.