Security advisory
LibreOffice has a feature where documents can specify that pre-installed macros can be executed on various script events such as mouse-over, document-open etc. Access is intended to be restricted to scripts under the share/Scripts/python, user/Scripts/python sub-directories of the LibreOffice install. Protection was added, to address CVE-2018-16858, to avoid a directory traversal attack where scripts in arbitrary locations on the file system could be executed. However this new protection could be bypassed by a URL encoding attack. In the fixed versions, the parsed url describing the script location is correctly encoded before further processing. This issue affects: Document Foundation LibreOffice versions prior to 6.2.6.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2019-9852
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 06:27 UTC · Revision 1
Source evidence
LibreOffice has a feature where documents can specify that pre-installed macros can be executed on various script events such as mouse-over, document-open etc. Access is intended to be restricted to scripts under the share/Scripts/python, user/Scripts/python sub-directories of the LibreOffice install. Protection was added, to address CVE-2018-16858, to avoid a directory traversal attack where scripts in arbitrary locations on the file system could be executed. However this new protection could be bypassed by a URL encoding attack. In the fixed versions, the parsed url describing the script location is correctly encoded before further processing. This issue affects: Document Foundation LibreOffice versions prior to 6.2.6.
osv:CVE-2019-9852
Complete source record
{
"id": "ee39f7b1f68e5365ee39f55bcbc7baaf5696215e147881fac723367362e2a7fa",
"url": "https://osv.dev/vulnerability/CVE-2019-9852",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2019-9852",
"summary": "LibreOffice has a feature where documents can specify that pre-installed macros can be executed on various script events such as mouse-over, document-open etc. Access is intended to be restricted to scripts under the share/Scripts/python, user/Scripts/python sub-directories of the LibreOffice install. Protection was added, to address CVE-2018-16858, to avoid a directory traversal attack where scripts in arbitrary locations on the file system could be executed. However this new protection could be bypassed by a URL encoding attack. In the fixed versions, the parsed url describing the script location is correctly encoded before further processing. This issue affects: Document Foundation LibreOffice versions prior to 6.2.6.",
"evidence": "osv:CVE-2019-9852",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2019-9852",
"aliases": [
"CVE-2019-9852"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/libreoffice/core",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "7c4bdddf82580ab62e442ff6497af92e69fddd5e"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:libreoffice:libreoffice:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "6.2.6"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"cp-6.2-5",
"CP-Android-iOS-4.2.0",
"cp-6.2-4",
"CODE-4.2.0-4",
"cp-6.2-3",
"CODE-4.2.0-3",
"CODE-4.2.0-2",
"co-6.2-2",
"CODE-4.2.0-1",
"co-6.2-1",
"cp-6.2-branch-point",
"libreoffice-6-2-branch-point",
"libreoffice-6-1-branch-point",
"libreoffice-6-0-branch-point",
"gpg4libre-review-5.4.99",
"libreoffice-5-4-branch-point",
"libreoffice-5-3-branch-point",
"libreoffice-5-2-branch-point",
"libreoffice-5-1-branch-point",
"libreoffice-5-0-branch-point",
"libreoffice-4-4-branch-point",
"libreoffice-4-3-branch-point",
"sdremote-2.0.0",
"libreoffice-4-2-branch-point",
"libreoffice-4-2-milestone-1",
"libreoffice-4-1-branch-point",
"libreoffice-4-0-branch-point",
"libreoffice-3-6-branch-point",
"libreoffice-3.5.0.0",
"libreoffice-3-5-branch-point",
"windows_build_successful_2011_11_08",
"MELD_LIBREOFFICE_REPOS"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-9852.json"
}
}
],
"modified": "2026-10-24T10:30:39.809945999Z",
"provider": "osv",
"references": [
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PMEGUWMWORC3DOVEHVXLFT3A5RSCMLBH/",
"https://lists.debian.org/debian-lts-announce/2019/10/msg00005.html",
"https://seclists.org/bugtraq/2019/Sep/17",
"https://usn.ubuntu.com/4102-1/",
"https://www.debian.org/security/2019/dsa-4501",
"https://seclists.org/bugtraq/2019/Aug/28",
"https://www.libreoffice.org/about-us/security/advisories/CVE-2019-9852"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*"
],
"vendor_product": "canonical:ubuntu_linux",
"extracted_events": [
{
"range": [
{
"introduced": "16.04"
},
{
"last_affected": "16.04"
},
{
"introduced": "18.04"
},
{
"last_affected": "18.04"
},
{
"introduced": "19.04"
},
{
"last_affected": "19.04"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
"cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"range": [
{
"introduced": "8.0"
},
{
"last_affected": "8.0"
},
{
"introduced": "9.0"
},
{
"last_affected": "9.0"
},
{
"introduced": "10.0"
},
{
"last_affected": "10.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*"
],
"vendor_product": "fedoraproject:fedora",
"extracted_events": [
{
"range": [
{
"introduced": "29"
},
{
"last_affected": "29"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*",
"cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*"
],
"vendor_product": "opensuse:leap",
"extracted_events": [
{
"range": [
{
"introduced": "15.0"
},
{
"last_affected": "15.0"
},
{
"introduced": "15.1"
},
{
"last_affected": "15.1"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2019-9852",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 434747,
"published_at": "2019-08-15T22:15:22.35+00:00"
}