{"schemaVersion":3,"id":"CVE-2026-53511","aliases":["UBUNTU-CVE-2026-53511","DEBIAN-CVE-2026-53511","openSUSE-SU-2026:11130-1"],"status":"published","duplicateOf":null,"title":null,"description":"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:user_metadata that is passed unsanitized to exec() in the template formatter. 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