Parse Server's Cloud function dispatch crashes server via prototype chain traversal

Description

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.

Recommendation

Update the parse-server package to the latest compatible version. Followings are version details:

• Affected version(s): **< 8.6.47

  >= 9.0.0, < 9.6.0-alpha.24**

• Patched version(s): **8.6.47

  9.6.0-alpha.24**

References

• GHSA-4263-jgmp-7pf4
• CVE-2026-32886
• CWE-1321
• CAPEC-310
• OWASP 2021-A6

Related Issues

• Parse Server has Denial of Service (DoS) and Cloud Function Dispatch Bypass via Prototype Chain Resolution - CVE-2026-30939
• Parse Server vulnerable to Prototype Pollution via Cloud Code Webhooks or Cloud Code Triggers - CVE-2022-41878
• Parse Server is vulnerable to Prototype Pollution via Cloud Code Webhooks - CVE-2022-41879
• Parse Server vulnerable to schema poisoning via prototype pollution in deep copy - CVE-2026-32878

Tags:

npm

parse-server