NPOI 2.7.5 Release Notes

[tonyqus]

Release Date: Sep 30, 2025

Please Read What's New in NPOI 2.7.x

Package Update

• Dependency on SixLabors.ImageSharp 2.1.10 has vulernabilty #1614

Bug Fixes

• Runs can have multiple CT_AlternateContent #1608
• XSSFSheet.AutoSizeColumn throws Exception while calling AutoSizeColumn(column, useMergedCells) #1594
• Corrupt files on save when cell has comments in NPOI 2.7.3 #1550
• CT_SortCondition should not include an iconSet where the sortBy is not equal to icon #1616
• Call GetColumnHelper() to make sure columnHelper is initialized  #1615
• Fixed export of chart separator value to xlsx #1612
• CreateFormulaListConstraint with SUBSTITUTE not work when 2.7.3 -> 2.7.4 #1596
• Validation cannot handle double quote #1369 (refix)

Enhancement

• Change orientation of different segments independently #1611
• Add support for removing XWPFHyperlinkRun #1585
• Add XSSF eventusermodel support #1620
• Add support for embedded object extractor #1607
• xlsb support for reading of xlsb files #1632

POI Bug Fixes

• HPSF improvement and bug fixes #1622
• XWPF POI Bug Migration II #1331
• POI bug 61470 and 61381 #1601
• Some patches from poi 3.17 #1600
• Bug 61431 - Conditional formatting evaluation ignores undefined cells #1598
• Port poi bug 61354 & 61363 #1597
• Ensure SpreadsheetVersion is set for AreaReferences #1587