Mattermost fails to check the required permissions in the POST /api/v4/channels/stats/member_count API resulting in channel member counts being leaked to a user without permissions.
{
"cna_assigner": "Mattermost",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/24xxx/CVE-2024-24776.json",
"unresolved_ranges": [
{
"extracted_events": [
{
"last_affected": "8.1.7"
},
{
"last_affected": "9.4.0"
}
],
"source": "AFFECTED_FIELD"
}
],
"cwe_ids": [
"CWE-284"
]
}{
"extracted_events": [
{
"introduced": "0"
},
{
"last_affected": "8.1.7"
}
],
"cpe": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
"source": "CPE_RANGE"
}