Parse Server's Cloud function dispatch crashes server via prototype chain traversal
Description
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 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. The fix in versions 9.6.0-alpha.24 and 8.6.47 restricts property lookups during cloud function name resolution to own properties only, preventing prototype chain traversal from stored function handlers. There is no known workaround.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
parse-servernpm | >= 9.0.0, < 9.6.0-alpha.24 | 9.6.0-alpha.24 |
parse-servernpm | < 8.6.47 | 8.6.47 |
Affected products
1- Range: >= 9.0.0, < 9.6.0-alpha.24
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
5- github.com/advisories/GHSA-4263-jgmp-7pf4ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-32886ghsaADVISORY
- github.com/parse-community/parse-server/pull/10210ghsax_refsource_MISCWEB
- github.com/parse-community/parse-server/pull/10211ghsax_refsource_MISCWEB
- github.com/parse-community/parse-server/security/advisories/GHSA-4263-jgmp-7pf4ghsax_refsource_CONFIRMWEB
News mentions
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