Overview
- Description
- Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6, 9.7.x <= 9.7.5, 9.8.x <= 9.8.1 fail to disallow users to set their own remote username, when shared channels were enabled, which allows a user on a remote to set their remote username prop to an arbitrary string, which would be then synced to the local server as long as the user hadn't been synced before.
- Source
- responsibledisclosure@mattermost.com
- NVD status
- Analyzed
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 4.3
- Impact score
- 1.4
- Exploitability score
- 2.8
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- Severity
- MEDIUM
Weaknesses
- nvd@nist.gov
- NVD-CWE-noinfo
- responsibledisclosure@mattermost.com
- CWE-284
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
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"vulnerable": true,
"matchCriteriaId": "CBEB8F40-C2DE-4E6F-8772-1BBCA44795A8",
"versionEndExcluding": "9.5.7",
"versionStartIncluding": "9.5.0"
},
{
"criteria": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B5C9F963-57DF-41E2-AA46-242317D93786",
"versionEndExcluding": "9.7.6",
"versionStartIncluding": "9.7.0"
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"matchCriteriaId": "6B4559B7-83E7-41B2-96A8-51F467CCD882",
"versionEndExcluding": "9.8.2",
"versionStartIncluding": "9.8.0"
},
{
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"vulnerable": true,
"matchCriteriaId": "4BE71910-C7C4-4F33-BFD4-40D2EAA56DB1"
}
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"operator": "OR"
}
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]