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ChromeWeb browser · Google

CVE-2019-5865

MEDIUM · 6.5 CVSS v3.1 Published 2019-11-25
Fix available
A fix is available. Upgrade to 76.0.3809.87 or later.
See remediation →
72/100
Remediation priority · Elevated
Remotely reachable No privileges

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Insufficient policy enforcement in navigations in Google Chrome prior to 76.0.3809.87 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

Insufficient policy enforcement in navigation handling in Google Chrome allowed a compromised renderer process to bypass site isolation protections via a crafted HTML page. Site isolation is designed to separate websites into different processes to prevent cross-origin data access; this vulnerability could enable an attacker who already compromised a renderer to access data from other origins.

MitigationUpdate Google Chrome to version 76.0.3809.87 or later to patch the navigation policy enforcement vulnerability.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
ChromeWeb browser
Affected:< 76.0.3809.87

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Check installed Chrome version
    Open Chrome and navigate to chrome://settings/help, or run 'google-chrome --version' in the terminal, or click Chrome menu > Help > About Google Chrome
    Affected if The displayed version number is less than 76.0.3809.87 (e.g., 76.0.3809.86 or earlier)
  2. Confirm the exact version build number
    Note the full version string shown in the About page (includes build number like 76.0.3809.87)
    Affected if The version is exactly 76.0.3809.87 or lower, or the build number cannot be verified as 76.0.3809.87 or higher
  3. Verify Chrome is not a special build
    Ensure this is standard Google Chrome (not Chromium project builds, Chrome Beta, Dev, or Canary)
    Affected if Using a standard Chrome release and version is below 76.0.3809.87

You are affected if the installed Google Chrome version is any release before 76.0.3809.87, as the vulnerability allows a compromised renderer process to bypass site isolation protections.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Upgrade available Upgrade to 76.0.3809.87 or later
Fixed in 76.0.3809.87
Interim mitigation

Update Google Chrome to version 76.0.3809.87 or later to patch the navigation policy enforcement vulnerability.

Fix this in Chrome Scoped from the published advisory
  • Consultation1.0 h
  • Implementation1.0 h
  • Testing1.0 h
  • Review / QA1.0 h
4.0 hours of engineering $750
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,200.

Scan for this in your stack

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2019-5865 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data