Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.9.1 and 8.6.82, deeply nested $or, $and, and $nor query condition operators in the REST API or LiveQuery query handling could trigger exponential-time processing in the internal query-traversal helper and block the Node.js event loop. This issue is fixed in versions 9.9.1 and 8.6.82.
{
"severity": "High",
"cpes": [
"cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:*"
]
}