Overview
- Description
- Mattermost fails to normalize UTF confusable characters when determining if a preview should be generated for a hyperlink, allowing an attacker to trigger link preview on a disallowed domain using a specially crafted link.
- Source
- responsibledisclosure@mattermost.com
- NVD status
- Analyzed
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 5.3
- Impact score
- 1.4
- Exploitability score
- 3.9
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- Severity
- MEDIUM
Weaknesses
- nvd@nist.gov
- NVD-CWE-noinfo
- responsibledisclosure@mattermost.com
- CWE-20
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "A414ED25-3A06-4485-A740-113DFBD3AAB1",
"versionEndExcluding": "7.1.9",
"versionStartIncluding": "5.34.0"
},
{
"criteria": "cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "468FF2BF-B5DC-4BFA-BF70-1B091644EE2A",
"versionEndExcluding": "7.8.4",
"versionStartIncluding": "7.2.0"
},
{
"criteria": "cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "E3BB0D81-A5EE-4FC5-94AB-0DD0CA243904",
"versionEndExcluding": "7.9.3",
"versionStartIncluding": "7.9.0"
}
],
"operator": "OR"
}
]
}
]