calibre is an e-book manager. Prior to 9.10.0, a malicious EPUB, OPF, or PDF file can execute arbitrary Python code when its metadata is read by calibre, including through Add books or Edit books, by embedding a custom column definition with a python: template in calibre:usermetadata that is passed unsanitized to exec() in the template formatter. This issue is fixed in version 9.10.0.

calibre is a cross-platform e-book manager for viewing, converting, editing, and cataloging e-books. Versions 9.2.1 and below contain a Path Traversal vulnerability that allows arbitrary file writes anywhere the user has write permissions. On Windows, this leads to Remote Code Execution by writing a payload to the Startup folder, which executes on next login. Function extractpictures only checks startswith('Pictures'), and does not sanitize '..' sequences. calibre's own ZipFile.extractall() in utils/zipfile.py does sanitize '..' via gettargetpath(), but extractpictures() bypasses this by using manual zf.read() + open(). This issue has been fixed in version 9.3.0.

calibre is a cross-platform e-book manager for viewing, converting, editing, and cataloging e-books. Versions 9.2.1 and below are vulnerable to Path Traversal through PDB readers (both 132-byte and 202-byte header variants) that allow arbitrary file writes with arbitrary extension and arbitrary content anywhere the user has write permissions. Files are written in 'wb' mode, silently overwriting existing files. This can lead to potential code execution and Denial of Service through file corruption. This issue has been fixed in version 9.3.0.

calibre before 5.32.0 contains a regular expression that is vulnerable to ReDoS (Regular Expression Denial of Service) in htmlpreprocessrules in ebooks/conversion/preprocess.py.

Unsanitized user-input in Calibre <= 7.15.0 allow attackers to perform reflected cross-site scripting.

Unsanitized user-input in Calibre <= 7.15.0 allow users with permissions to perform full-text searches to achieve SQL injection on the SQLite database.

Path traversal in Calibre <= 7.14.0 allow unauthenticated attackers to achieve arbitrary file read.

Input validation issues were found in Calibre at devices/linuxmounthelper.c which can lead to argument injection and elevation of privileges.

A untrusted search path issue was found in Calibre at devices/linuxmounthelper.c leading to the ability of unprivileged users to execute any program as root.

Race condition issues were found in Calibre at devices/linuxmounthelper.c allowing unprivileged users the ability to mount any device to anywhere.

The E-book viewer in calibre before 2.75 allows remote attackers to read arbitrary files via a crafted epub file with JavaScript.