{"id":"CVE-2026-30938","aliases":["BIT-parse-2026-30938","GHSA-q342-9w2p-57fp"],"url":"https://o3.security/vulnerability/CVE-2026-30938","summary":"Parse Server has denylist `requestKeywordDenylist` keyword scan bypass through nested object placement","details":"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.","published":"2026-03-10T16:34:02.930Z","modified":"2026-08-07T11:50:52.272057936Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"parse-server","fixedVersion":"8.6.12"},{"ecosystem":"npm","name":"parse-server","fixedVersion":"9.5.1-alpha.1"}],"fix":null,"references":[{"type":"WEB","url":"https://github.com/parse-community/parse-server/releases/tag/8.6.12"},{"type":"WEB","url":"https://github.com/parse-community/parse-server/releases/tag/9.5.1-alpha.1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30938.json"},{"type":"ADVISORY","url":"https://github.com/parse-community/parse-server/security/advisories/GHSA-q342-9w2p-57fp"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-30938"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T11:50:52.272057936Z"}}