What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 6.9 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-12 · updated 2026-10-26
• Weakness: CWE-863

Description

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 products

• parse-community parse-server: from 9.8.0, < 9.9.1-alpha.3

References

• https://github.com/parse-community/parse-server/pull/10482
• https://github.com/parse-community/parse-server/security/advisories/GHSA-p84r-h6rx-f2xr

Get alerted when CVE-2026-50008 or the next vulnerability affects your stack