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js · parse-serverCritical

parse-server Denial of Service via Deeply Nested Query Conditions

Parse Server is vulnerable to denial of service via deeply nested query condition operators, causing exponential time complexity.

20 Jun 2026Read 1 minSeverity: act now

What changed

Parse Server is vulnerable to denial of service via deeply nested query condition operators, causing exponential time complexity. The fix corrects query traversal to linear time and generalizes the queryDepth limit to prevent bypass.

Who it affects

All Parse Server installations using default configuration; no authentication required, only public app ID.

What to do today

Upgrade Parse Server to a patched version immediately.

The trail
Collected Audited Written Published