CVE-2026-30853: Improper Limitation of a Pathname to a Restricted Directory

calibre is a cross-platform e-book manager for viewing, converting, editing, and cataloging e-books. Prior to 9.5.0, a path traversal vulnerability in the RocketBook .rb input plugin src/calibre/ebooks/rb/reader.py allows an attacker to write arbitrary files to any path writable by the calibre...