🚨 CVE-2026-105749
Docling simplifies document processing by parsing diverse formats and providing integrations with the generative AI ecosystem. From 2.0.0 until 2.131.0, the HTML, JATS, OpenDocument spreadsheet, and BoxNote backends, including docling/backend/html_backend.py, docling/backend/jats_backend.py, and docling/backend/boxnote_backend.py, accept the rowspan and colspan attribute values without an upper bound and execute loops or allocate a table grid proportional to the declared span. A very small document can therefore cause sustained CPU use or multi-gigabyte memory allocation, and the document_timeout setting does not interrupt the single backend conversion call. Export through the TableData.grid property can further materialize the oversized grid. This issue is fixed in 2.131.0.
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GitHub
fix: clamp oversized table rowspan/colspan to the table size (#4414) · docling-project/docling@c5b4429
Declared rowspan/colspan values were used as-is by the HTML, JATS, BoxNote
and OpenDocument backends, so a cell declaring a span far larger than its
table sized the grid (and the loops filling it) ...
October 7, 2026 45
