PYSEC-2026-4211 Docling: Unbounded table rowspan/colspan in HTML, JATS, ODS and BoxNote backends causes CPU/memory exhaustion

Summary The HTML, JATS, ODS OpenDocument spreadsheet and BoxNote backends accept table rowspan / colspan values without an upper bound. A few bytes of input, such as , make docling run loops proportional to the declared span and allocate a table grid of the declared size. The result is CPU and...