Calibre

• 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
• 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
• Fix drag and drop of books into bookshelf view not working
• Bookshelf: Fix bookshelf view blank on some macOS systems
• E-book viewer: Fix a regression in calibre 9.0 that broke the Go to page function
• E-book viewer: Fix google dictionary lookup results not legible
• 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

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:
  Zaloguj lub Zarejestruj się aby zobaczyć!

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:
  Zaloguj lub Zarejestruj się aby zobaczyć!
• Fix drag and drop of books into bookshelf view not working
  Closes tickets:
  Zaloguj lub Zarejestruj się aby zobaczyć!
• Bookshelf: Fix bookshelf view blank on some macOS systems
  Closes tickets:
  Zaloguj lub Zarejestruj się aby zobaczyć!
• E-book viewer: Fix a regression in calibre 9.0 that broke the Go to page function
  Closes tickets:
  Zaloguj lub Zarejestruj się aby zobaczyć!
• E-book viewer: Fix google dictionary lookup results not legible
  Closes tickets:
  Zaloguj lub Zarejestruj się aby zobaczyć!
• 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:
  Zaloguj lub Zarejestruj się aby zobaczyć!