DotNetBrowser 4.2.0

Touch ID on macOS 

DotNetBrowser now supports the built-in macOS Touch ID platform authenticator using the WebAuthn API. Users on Mac can authenticate to sites that support passkeys using Touch ID directly through the browser.

As part of enabling this feature, the Chromium bundle ID changed from org.chromium.Chromium to com.teamdev.Platinum. Because macOS identifies applications by their bundle ID, it now treats this as a different application than previous builds. Developers and users may see macOS permission prompts on the first launch after an update — camera, microphone, screen recording, notifications, and accessibility access may each be re-requested. This is expected one-time behavior; granting the permissions restores normal operation.

Learn more in the migration guide.

Chromium 150.0.7871.47 

We upgraded Chromium to a newer version, which introduces 433 security fixes. Among them:

• CVE-2026-13774: Use after free in Extensions
• CVE-2026-13775: Use after free in GPU
• CVE-2026-14398: Use after free in ANGLE
• CVE-2026-13776: Type Confusion in Dawn
• CVE-2026-13777: Insufficient validation of untrusted input in iOSWeb

See the Chromium release announcement for more details.

Quality enhancements 

• Capture lists for Screens and ApplicationWindows sources are no longer empty on macOS when using StartSessionHandler.
• The sharing source picker dialog now appears in offscreen mode on macOS.

SBOM 

This section provides the Software Bill of Materials (SBOM) for DotNetBrowser 4.2.0 in CycloneDX format. The file lists the following software components:

• the third-party libraries used by DotNetBrowser,
• the Chromium build used by DotNetBrowser,
• the third-party components DotNetBrowser inherits from Chromium.

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