Fuzz introspector: POIXSSFFuzzer
For issues and ideas: https://github.com/ossf/fuzz-introspector/issues

Fuzzer calltree

0 [org.apache.poi.POIXSSFFuzzer].fuzzerTestOneInput(byte[]) [function] [call site] 00000
1 [java.io.ByteArrayInputStream].<init>(byte[]) [function] [call site] 00001
1 [org.apache.poi.xssf.usermodel.XSSFWorkbook].<init>(java.io.ByteArrayInputStream) [function] [call site] 00002
1 [org.apache.poi.xssf.streaming.SXSSFWorkbook].<init>(org.apache.poi.POIXSSFFuzzer) [function] [call site] 00003
1 [java.io.ByteArrayInputStream].<init>(byte[]) [function] [call site] 00004
1 [org.apache.poi.openxml4j.opc.OPCPackage].open(java.io.ByteArrayInputStream) [function] [call site] 00005
1 [org.apache.poi.xssf.extractor.XSSFEventBasedExcelExtractor].<init>(org.apache.poi.POIXSSFFuzzer) [function] [call site] 00006
1 [org.apache.poi.POIFuzzer].checkExtractor(org.apache.poi.POIXSSFFuzzer) [function] [call site] 00007