All vulnerabilities
CVE-2026-110600

xlsxio through 0.2.37 NULL Pointer Dereference via Worksheet Relationship Without Id

brechtsanders xlsxio
Open in ThreatlineRecord JSON
CVSS
6.8Medium
ExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 14 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.24%Chance of exploitation activity in the next 30 days, higher than 13% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Published14 Oct 2026Updated 14 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

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.

Text from CVE List

Affected versions 1

  • xlsxioaffected: all versions through 0.2.37CVE List

References 4