calibre-web

!Attention! For this update nh3 has to be installed !Attention!

New features:

• MOBI files now support metadata extraction on upload
• Reverse proxy login with shared secret header implemented

Bug Fixes:

• Cover path is now selected based on the correct setting instead of the presence of split_path (#3527)
• Title sort with "l'" now works correctly in French
• Exclamation marks removed from HTML strings
• Kobo sync behind reverse proxy now works correctly: library_sync URL is rewritten in init response
• Add-to-shelves dropdown menu now renders correctly
• Kobo "Sync to last page read" popup no longer appears repeatedly due to float/int mismatch
• Kobo "Return to last page read" popup when ProgressPercent is 0 now handled correctly
• Kobo PUT /state response now includes PriorityTimestamp
• Downloaded filenames now use native UTF-8 encoding for browsers that support it
• Series list view now sorts by the correct sort field, preventing incorrect article-inclusive sorting (#3583)
• natsort is now used for comic cover page detection when available
• Login failure now returns HTTP 401
• Registration and password reset emails are now sent in the recipient's language
• Crash when User-Agent header is missing is now fixed
• Infinite scroll now triggers correctly on mobile browsers (#3664)
• Case-insensitive duplicate tags are no longer created
• UNIQUE constraint crash on transliteration-identical authors is now fixed (#3403, #3170)
• Caliblur eReader toolbar dropdown overflow is now fixed
• Unauthenticated OPDS requests no longer cause an AttributeError (#3592)
• Metadata search no longer crashes when ComicVine or Douban return no results (#3606)
• Kobo API results are now correctly filtered
• kepubify path is now properly cleared when removed
• OPDS atom:updated now reflects the last modification date instead of date added
• Staged temporary download files are now cleaned up after the response is sent
• Cover sibling files are no longer created on every book download (--dont-save-cover)
• lubimyczytać.pl metadata provider is now working correctly
• Error handling for series display and book/user table sorting is now improved
• Book conversion format validation now works correctly with HTML-based formats
• Circular import issue in format conversion is now fixed
• File upload temp folder is now instance-specific
• Reverse proxy login now shows user warning when enabled
• Rate limiter reset for reverse proxy header login is now deactivated
• Reverse proxy login now restricts IP addresses and uses shared secret header
• Dialog size of Server side file picker is now limited
• Search metadata provider selection has been improved
• GDrive file type condition error is now fixed
• OPDS error handling for unauthenticated requests is improved

Security

• XSS payload in book comments imported via Calibre is now sanitized before display (reported by @Nozomu Sasaki)
• External binary names (e.g. unrar) are now restricted to prevent remote command execution (CVE-2025-7404)
• ReDoS vulnerability in whitespace stripping is now fixed (CVE-2025-6998)
• Stored XSS via author names in author.html is now prevented
• Magic link login flow is now hardened against misuse
• SQL injection via the database path parameter is now prevented
• LDAP injection in bind_user / get_object_details is now prevented
• XXE injection in EPUB, FB2 and Goodreads API parsing is now prevented
• IDOR in Kobo tokens is now fixed
• OAuth account relinking by unauthorized users is now prevented
• Shelf editing is now restricted to users with appropriate permissions
• Unauthorized access to book files via /show/ is now prevented
• Server credentials are no longer exposed in debug output
• Encryption key file now has restrictive file permissions (0o600)
• CSP nonce entropy increased from 32 to 128 bits
• SQL comment column names are now properly escaped
• A Format check during conversion is now performed