CVE-2026-14104 is a flaw (CVSS 9.8 in the record) in WebAppInstalls in Google Chrome before 150.0.7871.47. Insufficient validation of untrusted input allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted page. Chromium rates it Low. Update to 150.0.7871.47 or later.
What's affected
The record says Google Chrome prior to 150.0.7871.47 is affected. The fixed version is 150.0.7871.47 or later. The record points to the June 2026 Chrome stable channel update post for the desktop release notes. That page loads its content with scripts and did not render for our fetch, so open it in a browser to see the exact build numbers per platform.
Other Chromium based browsers take Chromium fixes on their own schedule, so check each vendor.
How to check if you're exposed
Open chrome://version in the address bar and read the version number. Anything below 150.0.7871.47 is in range. To trigger an update, open the three dot menu, choose Help, then About Google Chrome, and relaunch when asked.
For managed fleets, check the version through your device management console or with a script that reads the installed Chrome version on each platform.
What to do now
- Open chrome://version and check the build is 150.0.7871.47 or later.
- Use About Google Chrome to update and relaunch the browser.
- Confirm your fleet policy lets Chrome update, and relaunch long running sessions.
- Check other Chromium based browsers and embedded runtimes such as Electron apps against their vendor advisories.
- Keep an eye on the Chrome releases blog for new stable updates.
Why it matters
This one differs from the others in the release. The record says the attacker did not need a compromised renderer first, and that code runs inside a sandbox. The sandbox is the reason Chromium rates the severity Low, while the vector in the record yields 9.8.
It shows why scores and vendor ratings can disagree. The score treats the code execution as the impact, and the vendor weighs the sandbox that limits it. Update either way. The record does not flag the CVE as known exploited.
The record lists this weakness class: CWE-20 (Improper Input Validation).
Quick check
Why is a 9.8 flaw rated Low by Chromium?
The code runs inside the sandbox, which limits what it can reach. The record vector does not capture that, so the numbers differ.
Sources
Last reviewed: 19 October 2026.
