GHSA-4263-jgmp-7pf4
Parse Server's Cloud function dispatch crashes server via prototype chain traversal
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | parse-server | >= 9.0.0, < 9.6.0-alpha.24 | 9.6.0-alpha.24 |
| npm | parse-server | < 8.6.47 | 8.6.47 |
Details
As written in the advisory (Markdown source, shown as plain text).
### 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.
References
External links from the advisory. They lead to third-party sites.
- https://github.com/parse-community/parse-server/security/advisories/GHSA-4263-jgmp-7pf4
- https://nvd.nist.gov/vuln/detail/CVE-2026-32886
- https://github.com/parse-community/parse-server/pull/10210
- https://github.com/parse-community/parse-server/pull/10211
- https://github.com/parse-community/parse-server