CVE-2026-32886: Parse Server's Cloud function dispatch crashes server via prototype chain traversal

March 17, 2026 (updated March 19, 2026)

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.

References

github.com/advisories/GHSA-4263-jgmp-7pf4
github.com/parse-community/parse-server
github.com/parse-community/parse-server/pull/10210
github.com/parse-community/parse-server/pull/10211
github.com/parse-community/parse-server/security/advisories/GHSA-4263-jgmp-7pf4
nvd.nist.gov/vuln/detail/CVE-2026-32886

Code Behaviors & Features

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