CVE-2026-30938
Parse Server has denylist `requestKeywordDenylist` keyword scan bypass through nested object placement
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 8.6.12 and 9.5.1-alpha.1, the requestKeywordDenylist security control can be bypassed by placing any nested object or array before a prohibited keyword in the request payload. This is caused by a logic bug that stops scanning sibling keys after encountering the first nested value. Any custom requestKeywordDenylist entries configured by the developer are equally by-passable using the same technique. All Parse Server deployments are affected. The requestKeywordDenylist is enabled by default. This vulnerability is fixed in 8.6.12 and 9.5.1-alpha.1. Use a Cloud Code beforeSave trigger to validate incoming data for prohibited keywords across all classes.
| CWE | CWE-693 |
| Vendor | parse-community |
| Product | parse-server |
| Published | Mar 10, 2026 |
| Last Updated | Mar 10, 2026 |
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