CVE-2026-54071: Funstory-Ai Babeldoc

High severity, CVSS 7.8. EPSS: 0.4% chance of exploitation in the next 30 days.

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._load_data() loads CMap files. PDF-controlled Encoding or CMapName values and embedded PostScript usecmap operators can reach this sink after path separators are decoded, while _normalize_cmap_name() removes only a leading slash. Absolute paths or traversal sequences can escape the trusted CMap directories through os.path.join(), select an attacker-writable .pickle.gz file, and cause pickle.loads() to execute arbitrary Python code with the privileges of the BabelDOC process. This issue is fixed in version 0.6.3.

Affected products

• Funstory-Ai Babeldoc: before 0.6.3 (fixed in 0.6.3)

Published 2026-08-21. Last modified 2026-09-30.