Medium
Security advisory
An issue was discovered in Mattermost Server before 5.19.0, 5.18.1, 5.17.3, 5.16.5, and 5.9.8. Creation of a trusted OAuth application does not always require admin privileges, aka MMSA-2020-0001.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2020-14460
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 04:31 UTC · Revision 1
Source evidence
An issue was discovered in Mattermost Server before 5.19.0, 5.18.1, 5.17.3, 5.16.5, and 5.9.8. Creation of a trusted OAuth application does not always require admin privileges, aka MMSA-2020-0001.
osv:CVE-2020-14460
Complete source record
{
"id": "e95daf7a2d693fdf8a7341e7da3d7217d25bda1ed9cdd04c0ca906c1008dcfd6",
"url": "https://osv.dev/vulnerability/CVE-2020-14460",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2020-14460",
"summary": "An issue was discovered in Mattermost Server before 5.19.0, 5.18.1, 5.17.3, 5.16.5, and 5.9.8. Creation of a trusted OAuth application does not always require admin privileges, aka MMSA-2020-0001.",
"evidence": "osv:CVE-2020-14460",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2020-14460",
"aliases": [
"BIT-mattermost-2020-14460",
"CVE-2020-14460"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/mattermost/mattermost",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "10d179ab02abdb5981bae4a50db95d2a3153bc8c"
},
{
"introduced": "6597fdb40134965e26f715854dc85f5e6cfaa6df"
},
{
"fixed": "06d3d0f763853a9db0bd88ed8715b93506a45a3e"
},
{
"introduced": "c81e4f87c20a717b1dc52b2b77780fa789e19148"
},
{
"fixed": "35ea48a071f2837d30217cefb2de7d7855fe7f77"
},
{
"introduced": "cd38d63bf448ae791f252c3704a705e94b26959f"
},
{
"fixed": "539217ef5b26b746bc2a5914165c0a36d801baaf"
},
{
"introduced": "e542798b11a5404a7064ed94513346cad2b9c33d"
},
{
"last_affected": "90cf883f84000d6fdb025308ad14d56e6ed53f05"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "5.9.8"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.16.0"
},
{
"fixed": "5.16.5"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.17.0"
},
{
"fixed": "5.17.3"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.18.0"
},
{
"fixed": "5.18.1"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:mattermost:mattermost_server:5.19.0:rc1:*:*:*:*:*:*",
"range": [
{
"introduced": "5.19.0-rc1"
},
{
"last_affected": "5.19.0-rc1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:mattermost:mattermost_server:5.19.0:rc2:*:*:*:*:*:*",
"range": [
{
"introduced": "5.19.0-rc2"
},
{
"last_affected": "5.19.0-rc2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:mattermost:mattermost_server:5.19.0:rc3:*:*:*:*:*:*",
"range": [
{
"introduced": "5.19.0-rc3"
},
{
"last_affected": "5.19.0-rc3"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"5.19.0-rc1",
"5.19.0-rc2",
"5.19.0-rc3",
"v5.19.0-rc3",
"v5.19.0",
"v5.19.0-rc2",
"v5.9.7-rc1",
"v5.9.7",
"v5.16.4",
"v5.17.2",
"v5.18.0-rc4",
"v5.18.0-rc3",
"v5.18.0",
"v5.19.0-rc1",
"v5.9.6-rc1",
"v5.9.6",
"v5.16.3-rc1",
"v5.16.3",
"v5.17.1-rc1",
"v5.17.1",
"v5.17.0-rc4",
"v5.17.0-rc3",
"v5.17.0",
"v5.16.2-rc1",
"v5.16.2",
"v5.16.1-rc2",
"v5.16.1-rc1",
"v5.16.1",
"v5.9.5-rc1",
"v5.9.5",
"v5.16.0-rc3",
"v5.16.0",
"v5.9.4-rc1",
"v5.9.4",
"v5.9.3-rc1",
"v5.9.3",
"v5.9.2-rc1",
"v5.9.2",
"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-2020-14460.json"
}
}
],
"modified": "2026-10-24T10:30:19.542704667Z",
"provider": "osv",
"references": [
"https://mattermost.com/security-updates/"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2020-14460",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 430042,
"published_at": "2020-06-19T14:15:12.01+00:00"
}