GHSA-FX5J-QCQG-GRPF Excelize: Negative shared-string index causes panic in GetCellValue and GetRows

Negative shared-string index causes panic in GetCellValue and GetRows Summary Excelize parses shared-string cell values with strconv.Atoi and checks only the upper bound before indexing the shared string slice. If an XLSX file contains a shared-string cell with -1, the parsed index is negative. T...