CVE-2026-32886
CVE-2026-32886 · Parse Server's Cloud function dispatch crashes server via prototype chain traversal
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 8.2 · High · EPSS 0.7% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
parse-server
- Versions
- >= 9.0.0, < 9.6.0-alpha.24: Affected
- < 8.6.47: Affected
No fix published
parse-server npm
- Affected ranges
- SEMVER: ≥ 9.0.0, < 9.6.0-alpha.24
Update to 9.6.0-alpha.24
parse-server npm
- Affected ranges
- SEMVER: < 8.6.47
Update to 8.6.47