CVE-2026-110600
MEDIUM
CVSS 5.5
Published: 2026-10-14
Modified: 2026-10-15
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Description
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.
Quick Facts
| CVE ID | CVE-2026-110600 |
| CVSS Score | 5.5 |
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
| Published | 2026-10-14 |
| Exploited | No |
| CISA KEV | No |
| PoC | Not public |
References
- https://github.com/brechtsanders/xlsxio/blob/0.2.37/lib/xlsx…
- https://github.com/brechtsanders/xlsxio/issues/151
- https://hackmd.io/@haind-pwn/xlsxio-relationship-missing-id-…
- https://www.vulncheck.com/advisories/xlsxio-through-0.2.37-n…
- https://github.com/brechtsanders/xlsxio/issues/151
- https://hackmd.io/@haind-pwn/xlsxio-relationship-missing-id-…