Mattermost versions 10.8.x <= 10.8.1, 10.7.x <= 10.7.3, 10.5.x <= 10.5.7, 9.11.x <= 9.11.16 fail to sanitize input paths of file attachments in the bulk import JSONL file, which allows a system admin to read arbitrary system files via path traversal.
{
"cna_assigner": "Mattermost",
"cwe_ids": [
"CWE-22"
],
"unresolved_ranges": [
{
"source": "AFFECTED_FIELD",
"extracted_events": [
{
"introduced": "10.8.0"
},
{
"last_affected": "10.8.1"
},
{
"introduced": "10.7.0"
},
{
"last_affected": "10.7.3"
},
{
"introduced": "10.5.0"
},
{
"last_affected": "10.5.7"
},
{
"introduced": "9.11.0"
},
{
"last_affected": "9.11.16"
}
]
}
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/6xxx/CVE-2025-6233.json"
}{
"source": "CPE_RANGE",
"cpe": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
"extracted_events": [
{
"introduced": "9.11.0"
},
{
"fixed": "9.11.17"
},
{
"introduced": "10.5.0"
},
{
"fixed": "10.5.8"
},
{
"introduced": "10.7.0"
},
{
"fixed": "10.7.4"
},
{
"introduced": "10.8.0"
},
{
"fixed": "10.8.2"
}
]
}