Medium
Security advisory
An issue was discovered in Mattermost Server before 5.14.0, 5.13.3, 5.12.6, and 5.9.4. It allows remote attackers to cause a denial of service (application hang) via a crafted SVG document.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2019-20860
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 08:12 UTC · Revision 1
Source evidence
An issue was discovered in Mattermost Server before 5.14.0, 5.13.3, 5.12.6, and 5.9.4. It allows remote attackers to cause a denial of service (application hang) via a crafted SVG document.
osv:CVE-2019-20860
Complete source record
{
"id": "55124ad043d3d877a610462418ad035644dba590feddce9d8bab560e547fb1af",
"url": "https://osv.dev/vulnerability/CVE-2019-20860",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2019-20860",
"summary": "An issue was discovered in Mattermost Server before 5.14.0, 5.13.3, 5.12.6, and 5.9.4. It allows remote attackers to cause a denial of service (application hang) via a crafted SVG document.",
"evidence": "osv:CVE-2019-20860",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2019-20860",
"aliases": [
"CVE-2019-20860"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/mattermost/mattermost",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "2c5a87bfbcaa0f313b2a7913186df7f8ddd1747b"
},
{
"introduced": "bfd66aa445a2df8c6ed6ba9f2567021ecf6c9f3b"
},
{
"fixed": "96e36f73b25d7caa4d09c4a967fea54f57e9a52c"
},
{
"introduced": "f8469de7724a9449b43b514a99acefaf02430ad9"
},
{
"fixed": "9deca834d16c13b21a209e0fb5f681df047e2db1"
},
{
"introduced": "dbaa3a26ed968add264147545f2d2937b55e552b"
},
{
"last_affected": "3f905844dfda14efa5f4a597b97195d411b814ef"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "5.9.4"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.12.0"
},
{
"fixed": "5.12.6"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.13.0"
},
{
"fixed": "5.13.3"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:mattermost:mattermost_server:5.14.0:rc1:*:*:*:*:*:*",
"range": [
{
"introduced": "5.14.0-rc1"
},
{
"last_affected": "5.14.0-rc1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:mattermost:mattermost_server:5.14.0:rc2:*:*:*:*:*:*",
"range": [
{
"introduced": "5.14.0-rc2"
},
{
"last_affected": "5.14.0-rc2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:mattermost:mattermost_server:5.14.0:rc3:*:*:*:*:*:*",
"range": [
{
"introduced": "5.14.0-rc3"
},
{
"last_affected": "5.14.0-rc3"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:mattermost:mattermost_server:5.14.0:rc4:*:*:*:*:*:*",
"range": [
{
"introduced": "5.14.0-rc4"
},
{
"last_affected": "5.14.0-rc4"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:mattermost:mattermost_server:5.14.0:rc5:*:*:*:*:*:*",
"range": [
{
"introduced": "5.14.0-rc5"
},
{
"last_affected": "5.14.0-rc5"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"5.14.0-rc1",
"5.14.0-rc2",
"5.14.0-rc3",
"5.14.0-rc4",
"5.14.0-rc5",
"v5.14.0-rc5",
"v5.14.0",
"v5.14.0-rc4",
"v5.9.3-rc1",
"v5.9.3",
"v5.9.2-rc1",
"v5.9.2",
"v5.14.0-rc3",
"v5.12.5-rc1",
"v5.12.5",
"v5.13.2-rc1",
"v5.13.2",
"v5.14.0-rc2",
"v5.14.0-rc1",
"v5.13.1-rc1",
"v5.13.1",
"v5.12.4-rc1",
"v5.12.4",
"v5.13.0-rc4",
"v5.13.0-rc3",
"v5.13.0",
"v5.12.3-rc1",
"v5.12.3",
"v5.12.2-rc1",
"v5.12.2",
"v5.12.1-rc1",
"v5.12.1",
"v5.12.0-rc6",
"v5.12.0",
"v5.9.1-rc1",
"v5.9.1",
"v5.9.0-rc4",
"v5.9.0",
"v5.9.0-rc3",
"v5.9.0-rc2",
"v5.9.0-rc1",
"v5.8.0-rc4",
"v5.8.0",
"v5.8.0-rc3",
"v5.8.0-rc2",
"v5.8.0-rc1",
"v5.2.0-rc2",
"v5.2.0-rc1",
"v5.1.0-rc1",
"v5.0.0-rc1",
"v4.10.0-rc1",
"v4.9.0-rc1",
"v4.8.0-rc1",
"v4.7.0-rc1",
"v4.6.0-rc2",
"v4.6.0-rc1",
"v4.5.0-rc1",
"v4.4.0-rc1",
"v4.3.0-rc1",
"v4.2.0-rc1",
"v0.5.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-20860.json"
}
}
],
"modified": "2026-10-24T10:31:04.308958813Z",
"provider": "osv",
"references": [
"https://mattermost.com/security-updates/"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2019-20860",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 440482,
"published_at": "2020-06-19T15:15:10.743+00:00"
}