Vulnerability Description
Spreadsheet::XLSX versions before 0.19 for Perl allow code execution via string eval of number format conditions in ExcelFmt. When a number format has a condition such as [>100], ExcelFmt chooses the format section by passing the condition and the cell value to a string eval. Both come from the workbook, and the eval runs while Spreadsheet::XLSX->new parses it. An attacker who supplies an XLSX file can run arbitrary Perl code.
Related Weaknesses (CWE)
References
- https://metacpan.org/release/ASB/Spreadsheet-XLSX-0.19/changes
- http://www.openwall.com/lists/oss-security/2026/10/30/3
FAQ
What is CVE-2026-115943?
CVE-2026-115943 is a documented vulnerability. Spreadsheet::XLSX versions before 0.19 for Perl allow code execution via string eval of number format conditions in ExcelFmt. When a number format has a condition such as [>100], ExcelFmt chooses the...
How severe is CVE-2026-115943?
CVSS scoring is not yet available for CVE-2026-115943. Check NVD for updates.
Is there a patch for CVE-2026-115943?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.