{"id":"GHSA-mmg8-87c5-jrc2","summary":"Parse Server has a LiveQuery protected-field guard bypass via array-like logical operator value","details":"### Impact\n\nAn authenticated user with `find` class-level permission can bypass the `protectedFields` class-level permission setting on LiveQuery subscriptions. By sending a subscription with a `$or`, `$and`, or `$nor` operator value as a plain object with numeric keys and a `length` property (an \"array-like\" object) instead of an array, the protected-field guard is bypassed. The subscription event firing acts as a binary oracle, allowing the attacker to infer whether a protected field matches a given test value.\n\n### Patches\n\nThe fix validates that `$or`, `$and`, and `$nor` operator values are arrays in the LiveQuery subscription handler, the query depth checker, and the protected-field guard. As defense in depth, the LiveQuery query evaluator also rejects non-array values for these operators.\n\n### Workarounds\n\nThere is no known workaround.","aliases":["BIT-parse-2026-34595","CVE-2026-34595"],"modified":"2026-04-06T15:27:07.776510020Z","published":"2026-04-01T00:07:39Z","database_specific":{"nvd_published_at":"2026-03-31T16:16:34Z","cwe_ids":["CWE-843"],"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2026-04-01T00:07:39Z"},"references":[{"type":"WEB","url":"https://github.com/parse-community/parse-server/security/advisories/GHSA-mmg8-87c5-jrc2"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-34595"},{"type":"WEB","url":"https://github.com/parse-community/parse-server/pull/10350"},{"type":"WEB","url":"https://github.com/parse-community/parse-server/pull/10351"},{"type":"WEB","url":"https://github.com/parse-community/parse-server/commit/f63fd1a3fe0a7c1c5fe809f01b0e04759e8c9b98"},{"type":"WEB","url":"https://github.com/parse-community/parse-server/commit/ffad0ec6b971ee0dd9545e1bf1fb34ddebf275c2"},{"type":"PACKAGE","url":"https://github.com/parse-community/parse-server"}],"affected":[{"package":{"name":"parse-server","ecosystem":"npm","purl":"pkg:npm/parse-server"},"ranges":[{"type":"SEMVER","events":[{"introduced":"9.0.0"},{"fixed":"9.7.0-alpha.16"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-mmg8-87c5-jrc2/GHSA-mmg8-87c5-jrc2.json"}},{"package":{"name":"parse-server","ecosystem":"npm","purl":"pkg:npm/parse-server"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"8.6.70"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-mmg8-87c5-jrc2/GHSA-mmg8-87c5-jrc2.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"}]}