Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 8.5.0, 8.4.2, 8.3.4, 8.2.4, 8.1.5, 8.0.6, 7.13.8, and 7.10.12, in the visitors.info endpoint, https://developer.rocket.chat/apidocs/get-visitor-information-by-id-1, token is returned in the response. It looks like there's no use case for the token to be present in the response and it would be a good security practice to remove it altogether. This vulnerability is fixed in 8.5.0, 8.4.2, 8.3.4, 8.2.4, 8.1.5, 8.0.6, 7.13.8, and 7.10.12.
{
"cwe_ids": [
"CWE-285"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49278.json",
"cna_assigner": "GitHub_M"
}{
"extracted_events": [
{
"introduced": "8.5.0-rc.0"
},
{
"fixed": "8.5.0"
},
{
"introduced": "8.4.0-rc.0"
},
{
"fixed": "8.4.2"
},
{
"introduced": "8.3.0-rc.0"
},
{
"fixed": "8.3.4"
},
{
"introduced": "8.2.0-rc.0"
},
{
"fixed": "8.2.4"
},
{
"introduced": "8.1.0-rc.0"
},
{
"fixed": "8.1.5"
},
{
"introduced": "8.0.0-rc.0"
},
{
"fixed": "8.0.6"
},
{
"introduced": "7.11.0-rc.0"
},
{
"fixed": "7.13.8"
},
{
"introduced": "0"
},
{
"fixed": "7.10.12"
}
],
"source": "AFFECTED_FIELD"
}