DotNetBrowser 4.3.4

Chromium 156.0.8078.48 

We upgraded Chromium to a newer version, which introduces 400 security fixes. Among them:

• CVE-2026-110152: Buffer overflow in ANGLE
• CVE-2026-110149: Use after free in Browser
• CVE-2026-110136: Use after free in PDF
• CVE-2026-110161: Use after free in Network
• CVE-2026-110162: Use after free in Desktop

See the Chromium release announcements for more details.

• October 13
• October 15
• October 20

Quality enhancements 

• Fixed an issue where PDF form fields and cross-site iframes did not accept text input in Avalonia off-screen views on Windows.
• Fixed CORS preflight failures caused by extensions using declarativeNetRequest header rules.
• Fixed an issue where popup windows, such as date pickers, could remain invisible on Windows in hardware-accelerated rendering mode.
• On-device Web Speech recognition is now reported as unavailable. SpeechRecognition.install() resolves to false without downloading models.
• Fixed an InvalidCastException when converting browser bitmaps to images in WPF and Avalonia applications.
• Text input now works after closing a Chromium dialog in Avalonia off-screen views on Windows.
• Avalonia off-screen views on Linux now report focus loss when switching to another application.

SBOM 

This section provides the Software Bill of Materials (SBOM) for DotNetBrowser 4.3.4 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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