CVE-2026-54071 BabelDOC: Arbitrary Code Execution via CMap Pickle Deserialization in babeldoc/pdfminer/cmapdb.py

BabelDOC is a document translation tool. Prior to 0.6.3, BabelDOC's vendored PDF parser in babeldoc/pdfminer/cmapdb.py deserializes untrusted pickle data when CMapDB.loaddata loads CMap files. PDF-controlled Encoding or CMapName values and embedded PostScript usecmap operators can reach this sink...