Heap buffer overflow in spreadsheet tracked-changes import_CVE-2026-8358

5.4 / 10

MEDIUM

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

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.

Basic Information

ID CVE-2026-8358

Source Document Fdn.

Published Jun 15, 2026 at 16:24

Affected Product

Vendor The Document Foundation

Product LibreOffice

Version 26.2

Affected Versions The Document Foundation LibreOffice 26.2

CWE Classification

CWE-843 CWE-787

References

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

{
    "lastseen": "",
    "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.",
    "published": "2026-06-15T16:24:03.796Z",
    "modified": "2026-06-15T16:24:03.796Z",
    "type": "cve",
    "title": "Heap buffer overflow in spreadsheet tracked-changes import",
    "source": "Document Fdn.",
    "references": "https://www.libreoffice.org/about-us/security/advisories/cve-2026-8358",
    "id": "CVE-2026-8358",
    "bulletinFamily": "",
    "cwe": [
        "CWE-843",
        "CWE-787"
    ],
    "cvelist": null,
    "sourceData": "The Document Foundation LibreOffice 26.2",
    "sourceHref": "",
    "cvss": {
        "score": 5.4,
        "severity": "MEDIUM",
        "vector": "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",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "LibreOffice",
    "version": "26.2",
    "vendor": "The Document Foundation",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}