CVE-2026-30972: Parseplatform Parse-Server

High severity, CVSS 7.5. EPSS: 0.6% chance of exploitation in the next 30 days.

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior o 9.5.2-alpha.10 and 8.6.23, Parse Server's rate limiting middleware is applied at the Express middleware layer, but the batch request endpoint (/batch) processes sub-requests internally by routing them directly through the Promise router, bypassing Express middleware including rate limiting. An attacker can bundle multiple requests targeting a rate-limited endpoint into a single batch request to circumvent the configured rate limit. Any Parse Server deployment that relies on the built-in rate limiting feature is affected. This vulnerability is fixed in 9.5.2-alpha.10 and 8.6.23.

Affected products

• Parseplatform Parse-Server: before 8.6.23 (fixed in 8.6.23); from 9.0.0, before 9.5.2 (fixed in 9.5.2); version 9.5.2 only

Published 2026-03-10. Last modified 2026-06-17.