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Mallory
Critical

Sandbox escape in Google Chrome Navigation

IdentifiersCVE-2026-3545CWE-20· Improper Input Validation

CVE-2026-3545 is a high-severity insufficient data validation vulnerability in the Navigation component of Google Chrome prior to version 145.0.7632.159. According to the provided content, improper validation of navigation-related data can be triggered by a crafted HTML page, allowing a remote attacker to potentially achieve a sandbox escape. The issue affects Chrome/Chromium builds before the fixed 145.0.7632.159 release, and Google is listed as the reporter.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation may allow a remote attacker to escape Chrome’s sandbox security boundary via malicious web content. A sandbox escape can enable compromise beyond the renderer context, increasing the attacker’s ability to access more privileged browser processes or the underlying system, depending on exploit chaining and target conditions.

Mitigation

If you can’t patch tonight, do this now.

Apply the vendor update as soon as possible. Until patching is complete, reduce exposure by limiting use of untrusted or unknown websites and isolating high-risk browsing activity. In enterprise environments, prioritize rapid browser update rollout to all managed systems. No specific workaround beyond updating is provided in the supplied content.

Remediation

Patch, then assume compromise.

Update Google Chrome/Chromium to version 145.0.7632.159 or later. The provided advisory context states that Chrome Stable was updated to 145.0.7632.159/160 on Windows and macOS and 145.0.7632.159 on Linux. Enterprise administrators should deploy the patched version across managed endpoints using policy.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType
GoogleChromeapplication

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

10 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.
Exposure mapping

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Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity7

Community discussion across Reddit, Mastodon, and other social sources.