Rocket.Chat versions <8.5.1, 8.4.4, 8.3.6, 8.2.6, 8.1.6, 8.0.7, 7.13.9, 7.10.13 has an access control vulnerability in Livechat files. Protected file downloads at /file-upload/:fileId/:name authorize livechat access using rcroomtype=l with rcrid+rctoken, but the authorization path does not verify that rc_rid matches the requested file's rid. Furthermore, :fileId is predictable via sequential MongoDB IDs, and :name can be anything, allowing unauthenticated discovery of all uploaded files.
{
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48616.json",
"cna_assigner": "hackerone",
"cwe_ids": [
"CWE-284"
]
}{
"cpe": "cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*",
"source": "CPE_RANGE",
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "7.10.13"
},
{
"introduced": "7.13.0"
},
{
"fixed": "7.13.9"
},
{
"introduced": "8.0.0"
},
{
"fixed": "8.0.7"
},
{
"introduced": "8.1.0"
},
{
"fixed": "8.1.6"
},
{
"introduced": "8.2.0"
},
{
"fixed": "8.2.6"
},
{
"introduced": "8.3.0"
},
{
"fixed": "8.3.6"
},
{
"introduced": "8.4.0"
},
{
"fixed": "8.4.4"
},
{
"introduced": "8.5.0"
},
{
"fixed": "8.5.1"
}
]
}