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CVE-2026-63268— LFI via calcext:data-mappings, sql provider and sdbc:flat:file:// db href

Quick assessment

Affected
The Document Foundation LibreOffice
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.

LibreOffice Calc 允许将单元格区域链接到外部数据源，并且该链接会保存在文档中。对于 SQL 类型的链接，可以指定一个本地文本文件文件夹作为数据库，因此打开文档时可能会将本地文本文件读入工作表中。在修复版本中，仅在加载文档时恢复 CSV、HTML 和 XML 数据提供者。

CVSS 6.7 · Medium
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I. Basic Information for CVE-2026-63268

Vulnerability Information
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Vulnerability Title
LFI via calcext:data-mappings, sql provider and sdbc:flat:file:// db href
Source: CVE Program / CVE List V5
Vulnerability Description
LibreOffice Calc can link a cell range to an external data source, and the link is saved in the document. A link of the sql type could name a folder of local text files as a database, so opening a document could read a local text file into the sheet. In fixed versions only the csv, html and xml data providers are restored when a document is loaded.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
The Document Foundation LibreOffice 26.2 ~ < 26.2.5 -

II. Public POCs for CVE-2026-63268

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III. Intelligence Information for CVE-2026-63268

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Other References for CVE-2026-63268 (1)

Same Patch Batch · The Document Foundation · 2026-10-05 · 6 CVEs total

CVE-2026-63277 8.5 HIGH RCE via calcext:data-mappings, sql provider and jdbc connector
CVE-2026-63266 6.8 MEDIUM Arbitrary file write via calcext:data-mappings, sql provider and Firebird backup functiona
CVE-2026-63270 6.7 MEDIUM Environment/ini-file leaks
CVE-2026-63269 6.7 MEDIUM LFI and GET SSRF via GStreamer and HLS playlists
CVE-2026-63267 6.7 MEDIUM LFI and GET SSRF via calcext:data-mappings and csv provider

IV. Related Vulnerabilities

Same product: LibreOffice
Same vendor: The Document Foundation
Same weakness: CWE-200

V. Comments for CVE-2026-63268

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