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CVE-2026-115943— Spreadsheet::XLSX versions before 0.19 for Perl allow code execution via string eval of number format conditions in ExcelFmt

Quick assessment

Affected
CVE-2026-115943
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Perl 的 Spreadsheet::XLSX 模块在 0.19 版本之前存在漏洞：攻击者可通过在 Excel 数字格式条件中使用字符串 来执行任意代码。 当数字格式包含条件（例如 ）时，ExcelFmt 会将该条件与单元格值一同传入字符串 ，以决定应使用的格式片段。这两个参数均源自工作簿文件，而 的调用发生在 Spreadsheet::XLSX->new 解析该文件的过程中。 因此，若攻击者提供恶意的 XLSX 文件，即可在目标系统上执行任意 Perl 代码。

AI Predicted 9.8 Difficulty: Trivial EPSS 0.25% · P17

I. Basic Information for CVE-2026-115943

Vulnerability Information
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Vulnerability Title
Spreadsheet::XLSX versions before 0.19 for Perl allow code execution via string eval of number format conditions in ExcelFmt
Source: CVE Program / CVE List V5
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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
动态执行代码中指令转义处理不恰当(Eval注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
- - 0 ~ 0.19 -

II. Public POCs for CVE-2026-115943

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-115943

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Vendor Pages for CVE-2026-115943 (1)

IV. Related Vulnerabilities

Same weakness: CWE-95