Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.9.1-alpha.12 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-alpha.12 and 8.6.82.
{
"cna_assigner": "GitHub_M",
"cwe_ids": [
"CWE-407"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57480.json"
}{
"extracted_events": [
{
"range": [
{
"introduced": "9.0.0-alpha.1"
},
{
"fixed": "9.9.1-alpha.12"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
"introduced": "0"
},
{
"fixed": "8.6.82"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
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],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "1103c7a890e0455ba3dccd4bc5db17efe1789c9a"
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],
"source": "REFERENCES_COMMIT"
},
{
"original_tag": "8.6.82",
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{
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}
],
"source": "REFERENCES_TAG"
},
{
"original_tag": "9.9.1-alpha.12",
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{
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],
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}
]
}