{"id":"GHSA-vc89-5g3r-cmhh","summary":"Parse Server's Cloud Hooks and Cloud Jobs bypass `readOnlyMasterKey` write restriction","details":"### Impact\n\nParse Server's `readOnlyMasterKey` option allows access with master-level read privileges but is documented to deny all write operations. However, some endpoints incorrectly accept the `readOnlyMasterKey` for mutating operations. This allows a caller who only holds the `readOnlyMasterKey` to create, modify, and delete Cloud Hooks and to start Cloud Jobs, which can be used for data exfiltration.\n\nAny Parse Server deployment that uses the `readOnlyMasterKey` option is affected. Note than an attacker needs to know the `readOnlyMasterKey` to exploit this vulnerability.\n\n### Patches\n\nThe fix adds authorization checks, rejecting mutating requests made with the `readOnlyMasterKey`.\n\n### Workarounds\n\nThere is no known workaround other than upgrading. If upgrading is not immediately possible, ensure the `readOnlyMasterKey` value is not shared with untrusted parties.\n\n### Resources\n\n- GitHub security advisory: https://github.com/parse-community/parse-server/security/advisories/GHSA-vc89-5g3r-cmhh\n- Fixed in Parse Server 9.4.1-alpha.3: https://github.com/parse-community/parse-server/releases/tag/9.4.1-alpha.3\n- Fixed in Parse Server 8.6.4: https://github.com/parse-community/parse-server/releases/tag/8.6.4","aliases":["BIT-parse-2026-29182","CVE-2026-29182"],"modified":"2026-03-16T03:04:54.913640Z","published":"2026-03-05T00:33:18Z","database_specific":{"nvd_published_at":"2026-03-06T21:16:15Z","cwe_ids":["CWE-863"],"severity":"HIGH","github_reviewed":true,"github_reviewed_at":"2026-03-05T00:33:18Z"},"references":[{"type":"WEB","url":"https://github.com/parse-community/parse-server/security/advisories/GHSA-vc89-5g3r-cmhh"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-29182"},{"type":"PACKAGE","url":"https://github.com/parse-community/parse-server"},{"type":"WEB","url":"https://github.com/parse-community/parse-server/releases/tag/8.6.4"},{"type":"WEB","url":"https://github.com/parse-community/parse-server/releases/tag/9.4.1-alpha.3"}],"affected":[{"package":{"name":"parse-server","ecosystem":"npm","purl":"pkg:npm/parse-server"},"ranges":[{"type":"SEMVER","events":[{"introduced":"9.0.0"},{"fixed":"9.4.1-alpha.3"}]}],"database_specific":{"last_known_affected_version_range":"\u003c= 9.4.1-alpha.2","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-vc89-5g3r-cmhh/GHSA-vc89-5g3r-cmhh.json"}},{"package":{"name":"parse-server","ecosystem":"npm","purl":"pkg:npm/parse-server"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"8.6.4"}]}],"database_specific":{"last_known_affected_version_range":"\u003c= 8.6.3","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-vc89-5g3r-cmhh/GHSA-vc89-5g3r-cmhh.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}]}