Parse Server: Server option routeAllowList is bypassable through batch sub-requests
CVE-2026-50008

6.9MEDIUM

Key Information:

Vendor

Parse-community

Status
Parse-server
Vendor
CVE Published:
12 June 2026

What is CVE-2026-50008?

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. From version 9.8.0 to before version 9.9.1-alpha.3, the routeAllowList server option restricts external client access to a configured list of REST API routes. The check is only enforced as Express middleware against the outer HTTP request URL, so the /batch handler dispatches each sub-request to the internal router without re-running the allow-list check. An external caller whose outer route matches batch can issue batch sub-requests to any REST API route that the operator omitted from the allow-list. Authentication, ACL, CLP, and other inner-route authorization controls still apply — only the operator-configured route firewall is bypassed. This issue has been patched in version 9.9.1-alpha.3.

Affected Version(s)

parse-server >= 9.8.0, < 9.9.1-alpha.3

References

https://github.com/parse-community/parse-server/security/...
x_refsource_CONFIRM
https://github.com/parse-community/parse-server/pull/10482
x_refsource_MISC

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.