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CVE-2026-63267

LFI and GET SSRF via calcext:data-mappings and csv provider

MEDIUM
6.7
CVSS Score
Published: October 5, 2026 at 11:17 AM UTC
Updated: October 6, 2026 at 03:03 PM UTC
1 product affected across 1 vendorLibreOffice

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Severity
MEDIUM6.7
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

LibreOffice· Document
60%
26.2 ≤ v < < 26.2.526.2

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: cverecord
https://www.libreoffice.org/about-us/security/advisories/cve-2026-63267

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.7MEDIUMDocument Fdn.
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-918CWE-200

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