# CVE-2026-30972

## Summary

- **CVE ID:** CVE-2026-30972
- **Severity:** MEDIUM
- **CVSS Score:** 6.9 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:L)
- **CWE:** CWE-799
- **Published:** Mar 10, 2026
- **Last Modified:** Mar 11, 2026

## Description

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

- parse-community — parse-server (>= 9.0.0 < 9.5.2-alpha.10)
- parse-community — parse-server (< 8.6.23)

## References

- [CNA](https://github.com/parse-community/parse-server/security/advisories/GHSA-775h-3xrc-c228)
- [CNA](https://github.com/parse-community/parse-server/releases/tag/8.6.23)
- [CNA](https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.10)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.34%
- **EPSS Percentile:** 27.3

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._