What’s Vulnerable › Vulnerabilities
CVE-2026-63267: LFI and GET SSRF via calcext:data-mappings and csv provider
- Severity: medium (CVSS 6.7 v4.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.1% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-10-05 · updated 2026-10-06
- Weakness: CWE-200
Description
LibreOffice Calc can link a cell range to an external csv data source, and the link is saved in the document. Such a link was fetched while the document loaded, so opening a document could read a local file into the sheet, or make a request to a host of the document's choosing. In fixed versions external data links are updated under the same link update control as other links in a spreadsheet.
Affected products
- The Document Foundation LibreOffice: from 26.2 before < 26.2.5 — fixed in < 26.2.5
How to fix
Upgrade to a fixed version: The Document Foundation LibreOffice < 26.2.5. Check the vendor advisory for mitigations.
References
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