high8.2
CVE-2026-32886
Parse Server's Cloud function dispatch crashes server via prototype chain traversal
Impact
### 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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | parse-server | >= 9.0.0, < 9.6.0-alpha.24 | 9.6.0-alpha.24 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Parseplatform | Parse-Server | before 8.6.47 from 9.0.0 before 9.6.0 Version 9.6.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- 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/security/advisories/GHSA-4263-jgmp-7pf4
- https://github.com/advisories/GHSA-4263-jgmp-7pf4
- https://nvd.nist.gov/vuln/detail/CVE-2026-32886