xlsxio v0.1.2 to v0.2.34 was discovered to contain a free of uninitialized pointer in the xlsxioread_sheetlist_close() function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted XLSX file.
https://github.com/xf1les/cve-advisories/blob/main/2023/CVE-2023-34795.md
https://github.com/brechtsanders/xlsxio/issues/121
https://github.com/brechtsanders/xlsxio/commit/d653f1604b54532f11b45dca1fa164b4a1f15e2d