CVE-2026-30972

Parse Server has a rate limit bypass via batch request endpoint

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.

Scores

Weaknesses (CWE)

• CWE-799

Advisories

• GHSA-775h-3xrc-c228 — Parse Server has a rate limit bypass via batch request endpoint

European references

• ENISA EUVD · EUVD-2026-10886
• GCVE · GCVE-0-2026-30972

Affected configurations (NVD CPE)

• cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:* < 8.6.23
• cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:* ≥ 9.0.0 < 9.5.2
• cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha1:*:*:*:node.js:*:*
• cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha2:*:*:*:node.js:*:*
• cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha3:*:*:*:node.js:*:*
• cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha4:*:*:*:node.js:*:*
• cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha5:*:*:*:node.js:*:*
• cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha6:*:*:*:node.js:*:*
• cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha7:*:*:*:node.js:*:*
• cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha8:*:*:*:node.js:*:*
• cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha9:*:*:*:node.js:*:*

Affected products

References

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

Sources