4.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
4.9 Medium
AI Score
Confidence
High
0.0004 Low
EPSS
Percentile
9.0%
Mattermost fails to properly validate the length of the emoji value in the custom user status, allowing an attacker to sendΒ multiple times a very long string as an emoji value causing high resource consumption and possibly crashing the server.
[
{
"defaultStatus": "unaffected",
"product": "Mattermost",
"vendor": "Mattermost",
"versions": [
{
"lessThanOrEqual": "9.2.4",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "8.1.8",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "9.3.0",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "9.4.0"
},
{
"status": "unaffected",
"version": "9.3.1"
},
{
"status": "unaffected",
"version": "9.2.5"
},
{
"status": "unaffected",
"version": "8.1.9"
}
]
}
]
4.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
4.9 Medium
AI Score
Confidence
High
0.0004 Low
EPSS
Percentile
9.0%