Parse Server's Cloud function dispatch crashes server via prototype chain traversal
### Impact Remote clients can crash the Parse Server process by calling a cloud function endpoint with a crafted function name that traverses the JavaScript prototype chain of a registered cloud function handler, causing a stack overflow. ### Patches The fix restricts property lookups during cloud function name resolution to own properties only, preventing prototype chain traversal from stored function handlers. ### Workarounds There is no known workaround.
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-32886US | high7.5 | — | ||
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0-alpha.24 and 8.6.47, remote clients can crash the Parse Serve… | ||||
references
External citations — patches, advisories, analysis.
- https://github.com/parse-community/parse-serverPACKAGE
- https://github.com/parse-community/parse-server/pull/10210WEB
- https://github.com/parse-community/parse-server/pull/10211WEB
- https://github.com/parse-community/parse-server/security/advisories/GHSA-4263-jgmp-7pf4WEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-32886ADVISORY
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