{"id":"GHSA-qpc3-fg4j-8hgm","summary":"Parse Server has a protected field change detection oracle via LiveQuery watch parameter","details":"### Impact\n\nAn attacker can subscribe to LiveQuery with a `watch` parameter targeting a protected field. Although the protected field value is properly stripped from event payloads, the presence or absence of update events reveals whether the protected field changed, creating a binary oracle. For boolean protected fields, the timing of change events is equivalent to knowing the field value.\n\n### Patches\n\nThe `watch` parameter is now validated against protected fields at subscription time, mirroring the existing validation for the `where` clause. Subscriptions that include protected fields in `watch` are rejected with a permission error. Master key connections are exempt.\n\n### Workarounds\n\nNone.","aliases":["BIT-parse-2026-33429","CVE-2026-33429"],"modified":"2026-03-30T14:07:40.785362Z","published":"2026-03-20T20:45:40Z","database_specific":{"cwe_ids":["CWE-203"],"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2026-03-20T20:45:40Z","nvd_published_at":"2026-03-24T19:16:53Z"},"references":[{"type":"WEB","url":"https://github.com/parse-community/parse-server/security/advisories/GHSA-qpc3-fg4j-8hgm"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33429"},{"type":"WEB","url":"https://github.com/parse-community/parse-server/pull/10253"},{"type":"WEB","url":"https://github.com/parse-community/parse-server/pull/10254"},{"type":"WEB","url":"https://github.com/parse-community/parse-server/commit/0c0a0a5a37ca821d2553119f2cb3be35322eda4b"},{"type":"WEB","url":"https://github.com/parse-community/parse-server/commit/c62eacaf38de86913f09240583448360b1cc8e67"},{"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":"9.6.0-alpha.43"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-qpc3-fg4j-8hgm/GHSA-qpc3-fg4j-8hgm.json"}},{"package":{"name":"parse-server","ecosystem":"npm","purl":"pkg:npm/parse-server"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"8.6.54"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-qpc3-fg4j-8hgm/GHSA-qpc3-fg4j-8hgm.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"}]}