brechtsanders xlsxio up to 0.2.37 lib/xlsxio_read.c Id null pointer dereference

Summaryinfo

A vulnerability marked as problematic has been reported in brechtsanders xlsxio up to 0.2.37. This issue affects the function main_sheet_get_sheetfile_expat_callback_element_start of the file lib/xlsxio_read.c. Performing a manipulation of the argument ID results in null pointer dereference. This vulnerability is cataloged as CVE-2026-110600. The attack must be initiated from a local position. There is no exploit available.

Detailsinfo

A vulnerability classified as problematic has been found in brechtsanders xlsxio up to 0.2.37. This affects the function main_sheet_get_sheetfile_expat_callback_element_start of the file lib/xlsxio_read.c. The manipulation of the argument Id with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-110600 since 10/14/2026. The exploitability is told to be easy. Attacking locally is a requirement. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• brechtsanders

Name

• xlsxio

Version

• 0.2.0
• 0.2.1
• 0.2.2
• 0.2.3
• 0.2.4
• 0.2.5
• 0.2.6
• 0.2.7
• 0.2.8
• 0.2.9
• 0.2.10
• 0.2.11
• 0.2.12
• 0.2.13
• 0.2.14
• 0.2.15
• 0.2.16
• 0.2.17
• 0.2.18
• 0.2.19
• 0.2.20
• 0.2.21
• 0.2.22
• 0.2.23
• 0.2.24
• 0.2.25
• 0.2.26
• 0.2.27
• 0.2.28
• 0.2.29
• 0.2.30
• 0.2.31
• 0.2.32
• 0.2.33
• 0.2.34
• 0.2.35
• 0.2.36
• 0.2.37

Website

• Product: https://github.com/brechtsanders/xlsxio/

CPE 2.3info

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CPE 2.2info

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