PARSE-SERVER · CVE-2026-32944 · Package
FIX → 9.6.0-alpha.21 · 8.6.45 · 9.6.0
A single request with deeply nested query condition operators makes the Parse Server process crash. Any unauthenticated client can take the server and every connected client offline.
first public Mar 16, 2026 · 2 sources
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Any Parse Server deployment reachable from the internet is exposed to a single unauthenticated request that crashes the process. The advisory's mitigation is the queryDepth option, which is off by default, so a default configuration stays exposed until it is enabled. Applications using a managed Parse host should check with the host.
Not affected if auth-required, managed-hosting
Who cares node, parse-server, self-hosted
npm ls parse-serverParse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0-alpha.21 and 8.6.45, an unauthenticated attacker can crash the Parse Server process by sending a single request with deeply nested query condition operators. This terminates the server and denies service to all connected clients. Starting in version 9.6.0-alpha.21 and 8.6.45, a depth limit for query condition operator nesting has been added via the requestComplexity.queryDepth server option. The option is disabled by default to avoid a breaking change. To mitigate, upgrade and set the option to a value appropriate for your app. No known workarounds are available.
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requestComplexity.queryDepthUpgrade to 9.6.0-alpha.21 · 8.6.45 · 9.6.0
9.6.0-alpha.21 for the 9.x line8.6.45 for the 8.x linerequestComplexity.queryDepth to a value suitable for your app; the option is disabled by defaultThis page as .md · .json · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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