New features
ZIP Output: Change the template engine used for HTML templating from templite to Mustache, for greater safety and performance. Note that this is a breaking change if you use custom templates with ZIP output (CVE-2026-25731)
Check library: Add an option to rebuild the annotations search index
Closes tickets: 2139555

Bug fixes
CHM Input: Ignore internal files that have paths that end up outside the container. Prevents path traversal attacks with malicious CHM files (CVE-2026-25635)
EPUB Input: Ensure font obfuscation processing happens only on files from the EPUB, preventing path traversal attacks from malicious EPUB files (CVE-2026-25636)
Windows: Workaround for bug in Qt 6.10 causing Read Aloud in the E-book viewer to crash when stopped and restarted
Closes tickets: 2139521

Fix drag and drop of books into bookshelf view not working
Closes tickets: 2139529

Bookshelf: Fix bookshelf view blank on some macOS systems
Closes tickets: 2139403

E-book viewer: Fix a regression in calibre 9.0 that broke the Go to page function
Closes tickets: 2139576

E-book viewer: Fix google dictionary lookup results not legible
Closes tickets: 2140541

E-book viewer: Fix PageUp/PageDown keys needing to be pressed repeatedly at internal HTML file boundaries in flow mode
Bookshelf: Avoid rendering during initial show while the view is still being resized
Fix a regression in calibre 9.0 that caused mouse wheel to scroll a full row at a time in the Cover grid
News download: Fix a regression in 8.11 that broke automatic cleanup of downloaded HTML
Version 9.2.1 prevents the Content server from using template based searches since this is insecure when the content server is used with un-authenticated users
Closes tickets: 2140769

The application starts maximized
Added “Big Icons” option into View menu
Added “PAID” right-click menu item into Credits list
Fixed Customer and Product list bug in Sales
Fixed some high-DPI issues
Improved UI

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outube Downloader HD 5.9.9.7 не качает