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ChromeWeb browser · Google

CVE-2026-9990

HIGH · 7.5 CVSS v3.1 Published 2026-05-28
Fix available
A fix is available. Upgrade to 148.0.7778.216 or later.
See remediation →
82/100
Remediation priority · High
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
Use after free in WebAppInstalls in Google Chrome on Mac prior to 148.0.7778.216 allowed a remote attacker who convinced a user to engage in specific UI gestures to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)

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

Use-after-free vulnerability in WebAppInstalls component of Google Chrome on Mac OS allows a remote attacker to potentially exploit heap corruption via crafted HTML pages requiring specific user UI interactions.

MitigationUpdate Google Chrome on Mac systems to version 148.0.7778.216 or later to remediate this 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:< 148.0.7778.216

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
High
Privileges
None
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

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. Confirm Mac OS is in use
    Check the operating system by running 'sw_vers' or viewing System Settings > About on the system
    Affected if The system is not running Mac OS - this vulnerability only affects Chrome on Mac OS
  2. Verify Google Chrome is installed
    Open Chrome and navigate to chrome://version, or run 'google-chrome --version' in Terminal
    Affected if Google Chrome is not installed on the system
  3. Determine installed Chrome version
    Note the full version string displayed in chrome://version or the command output
    Affected if Chrome is installed but the version cannot be determined
  4. Compare version against affected range
    Compare your installed Chrome version to the affected range: versions earlier than 148.0.7778.216 are vulnerable
    Affected if Installed version is less than 148.0.7778.216 (for example, 148.0.7778.100 or 147.x.x.x)

You are affected if the system runs Mac OS with Google Chrome version lower than 148.0.7778.216 installed.

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.

dbcve · scoped
Upgrade available Upgrade to 148.0.7778.216 or later
Fixed in 148.0.7778.216
Interim mitigation

Update Google Chrome on Mac systems to version 148.0.7778.216 or later to remediate this vulnerability.

Recommended fix High confidence

148.0.7778.216

  1. Open Google Chrome on your Mac
  2. Click on the Chrome menu in the menu bar
  3. Select 'About Google Chrome'
  4. Chrome will automatically check for updates and display the current version
  5. If an update is available, click 'Update Google Chrome'
  6. Restart Chrome to complete the update

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Chrome Scoped from the published advisory
  • Consultation1.0 h
  • Implementation2.0 h
  • Testing1.0 h
  • Review / QA1.0 h
5.0 hours of engineering $890
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,424.

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-2026-9990 in production — separate from our analysis above.

No notes yet

Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.

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