{"id":"CVE-2026-30228","aliases":["BIT-parse-2026-30228","GHSA-xfh7-phr7-gr2x"],"url":"https://o3.security/vulnerability/CVE-2026-30228","summary":"Parse Server: File creation and deletion bypasses `readOnlyMasterKey` write restriction","details":"### Impact\n\nThe `readOnlyMasterKey` can be used to create and delete files via the Files API (`POST /files/:filename`, `DELETE /files/:filename`). This bypasses the read-only restriction which violates the access scope of the `readOnlyMasterKey`.\n\nAny Parse Server deployment that uses `readOnlyMasterKey` and exposes the Files API is affected. An attacker with access to the `readOnlyMasterKey` can upload arbitrary files or delete existing files.\n\n### Patches\n\nThe fix adds permission checks to both the file upload and file delete handlers.\n\n### Workarounds\n\nThere is no workaround other than not using `readOnlyMasterKey`, or restricting network access to the Files API endpoints.\n\n### References\n \n- GitHub security advisory: https://github.com/parse-community/parse-server/security/advisories/GHSA-xfh7-phr7-gr2x\n- Fix for Parse Server 9: https://github.com/parse-community/parse-server/releases/tag/9.5.0-alpha.3\n- Fix for Parse Server 8: https://github.com/parse-community/parse-server/releases/tag/8.6.5","published":"2026-03-06T20:25:35.327Z","modified":"2026-08-12T03:51:14.471972353Z","cvss":null,"epss":{"score":0.00329,"percentile":0.26027,"asOf":"2026-09-16"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"parse-server","fixedVersion":"9.5.0-alpha.3"},{"ecosystem":"npm","name":"parse-server","fixedVersion":"8.6.5"}],"fix":null,"references":[{"type":"WEB","url":"https://github.com/parse-community/parse-server/releases/tag/8.6.5"},{"type":"WEB","url":"https://github.com/parse-community/parse-server/releases/tag/9.5.0-alpha.3"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30228.json"},{"type":"ADVISORY","url":"https://github.com/parse-community/parse-server/security/advisories/GHSA-xfh7-phr7-gr2x"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-30228"},{"type":"PACKAGE","url":"https://github.com/parse-community/parse-server"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:14.471972353Z"}}