CVE-2026-8358

MEDIUM

The Document Foundation LibreOffice - Heap Buffer Overflow in Spreadsheet Tracked-Changes Import

Title source: rule

Description

LibreOffice Calc can import tracked changes from a spreadsheet document. A heap buffer overflow existed when a document reused the same change identifier for two different kinds of change. The importer then treated one change object as a different, larger type and wrote past the end of its allocation. In fixed versions records with a duplicate identifier are rejected.

References (1)

Core 1

Core References

https://www.libreoffice.org/about-us/security/advisories/cve-2026-8358

Scores

CVSS v4 5.4

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-787 CWE-843

Status published

Products (1)

The Document Foundation/LibreOffice 26.2 - < 26.2.4

Published Jun 15, 2026

Tracked Since Jun 15, 2026