Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to versions 7.10.8, 7.11.5, 7.12.5, 7.13.4, 8.0.2, 8.1.1, and 8.2.0, a NoSQL injection vulnerability exists in Rocket.Chat's account service used in the ddp-streamer micro service that allows unauthenticated attackers to manipulate MongoDB queries during authentication. The vulnerability is located in the username-based login flow where user-supplied input is directly embedded into a MongoDB query selector without validation. An attacker can inject MongoDB operator expressions (e.g., { $regex: '.*' }) in place of a username string, causing the database query to match unintended user records. This issue has been patched in versions 7.10.8, 7.11.5, 7.12.5, 7.13.4, 8.0.2, 8.1.1, and 8.2.0.
{
"cwe_ids": [
"CWE-943"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30833.json",
"cna_assigner": "GitHub_M"
}{
"cpe": "cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*",
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "7.10.8"
},
{
"introduced": "7.11.0"
},
{
"fixed": "7.11.5"
},
{
"introduced": "7.12.0"
},
{
"fixed": "7.12.5"
},
{
"introduced": "7.13.0"
},
{
"fixed": "7.13.4"
},
{
"introduced": "8.0.0"
},
{
"fixed": "8.0.2"
},
{
"introduced": "8.1.0"
},
{
"fixed": "8.1.1"
}
],
"source": "CPE_RANGE"
}