VulnerabilityDeferred

CVE-2026-63267

LibreOffice Calc can link a cell range to an external csv data source, and the link is saved in the document.

MEDIUM 6.7EPSS 0.11%

Does this matter?

Lower severity and a low EPSS score (0.11%). Track it; it rarely justifies an emergency change on its own.

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.

CVSS 4.0: 6.7 MEDIUMCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS: 0.11% probability · 1th percentile
Public exploits: None in Exploit-DB
CISA KEV: Not listed
Weakness: CWE-200, CWE-918
Source: security@documentfoundation.org

EPSS trend

EPSS moved from 0.1% on 6 October 2026 to 0.1% on 26 October 2026.

References

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

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.