Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.5.2-alpha.3 and 8.6.16, class-level permissions (CLP) are not enforced for LiveQuery subscriptions. An unauthenticated or unauthorized client can subscribe to any LiveQuery-enabled class and receive real-time events for all objects, regardless of CLP restrictions. All Parse Server deployments that use LiveQuery with class-level permissions are affected. Data intended to be restricted by CLP is leaked to unauthorized subscribers in real time. This vulnerability is fixed in 9.5.2-alpha.3 and 8.6.16.
{
"cna_assigner": "GitHub_M",
"cwe_ids": [
"CWE-863"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30947.json",
"unresolved_ranges": [
{
"extracted_events": [
{
"range": [
{
"introduced": ">= 9.0.0 < 9.5.2-alpha.3"
},
{
"last_affected": ">= 9.0.0 < 9.5.2-alpha.3"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandaloneSingleVersion"
}
]
}
]
}{
"extracted_events": [
{
"cpe": "cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "8.6.16"
}
],
"source": "CPE_RANGE"
},
{
"original_tag": "8.6.16",
"range": [
{
"fixed": "20abb1cf36214d05b4be7a081a41c6df5becf42b"
}
],
"source": "REFERENCES_TAG"
},
{
"original_tag": "9.5.2-alpha.3",
"range": [
{
"fixed": "0538835605c67cac177fcc7da0d06500c0a46800"
}
],
"source": "REFERENCES_TAG"
}
]
}