CVE-2026-110600
CVE-2026-110600 · xlsxio through 0.2.37 NULL Pointer Dereference via Worksheet Relationship Without Id
This page contains facts from public vulnerability sources. Check the original advisory before updating.
xlsxio through 0.2.37 contains a NULL pointer dereference vulnerability in main_sheet_get_sheetfile_expat_callback_element_start() in lib/xlsxio_read.c that allows attackers to crash applications via crafted files. Attackers can supply a .xlsx file whose workbook.xml.rels contains a worksheet Relationship lacking an Id attribute, crashing the process when xlsxioread_sheet_open() is called.
CVSS 6.8 · Medium · EPSS 0.2%
- Published
- Updated
Affected products and versions
xlsxio
- Versions
- ≥ 0, ≤ 0.2.37: Affected (semver)
No fix published
Original sources
- https://github.com/brechtsanders/xlsxio/issues/151
- https://github.com/brechtsanders/xlsxio/blob/0.2.37/lib/xlsxio_read.c#L851-L866
- https://hackmd.io/@haind-pwn/xlsxio-relationship-missing-id-null-deref
- https://www.vulncheck.com/advisories/xlsxio-through-0.2.37-null-pointer-dereference-via-worksheet-relationship-without-id
- https://nvd.nist.gov/vuln/detail/CVE-2026-110600