Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 8.5.0, 8.4.1, 8.3.3, 8.2.3, 8.1.4, 8.0.5, 7.13.7, and 7.10.11, Rocket.Chat's sendFileMessage DDP method passes the entire attacker-supplied file object into Uploads.updateFileComplete, which merges it directly into a MongoDB $set update via Object.assign. There is no allow-list of writable fields. An attacker can therefore rewrite any column on their own upload record, notably store and the store-specific path fields. This vulnerability is fixed in 8.5.0, 8.4.1, 8.3.3, 8.2.3, 8.1.4, 8.0.5, 7.13.7, and 7.10.11.
{
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45687.json",
"cwe_ids": [
"CWE-915"
],
"cna_assigner": "GitHub_M"
}{
"extracted_events": [
{
"introduced": "8.5.0-rc.0"
},
{
"fixed": "8.5.0"
},
{
"introduced": "8.4.0-rc.0"
},
{
"fixed": "8.4.1"
},
{
"introduced": "8.3.0-rc.0"
},
{
"fixed": "8.3.3"
},
{
"introduced": "8.2.0-rc.0"
},
{
"fixed": "8.2.3"
},
{
"introduced": "8.1.0-rc.0"
},
{
"fixed": "8.1.4"
},
{
"introduced": "8.0.0-rc.0"
},
{
"fixed": "8.0.5"
},
{
"introduced": "7.11.0-rc.0"
},
{
"fixed": "7.13.7"
},
{
"introduced": "0"
},
{
"fixed": "7.10.11"
}
],
"source": "AFFECTED_FIELD"
}