{"id":"CVE-2026-33429","state":"PUBLISHED","title":"Parse Server: Protected field change detection oracle via LiveQuery watch parameter","description":"Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.54 and 9.6.0-alpha.43, an 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. This issue has been patched in versions 8.6.54 and 9.6.0-alpha.43.","publishedAt":"2026-03-24T18:16:35.414Z","updatedAt":"2026-03-25T13:34:05.792Z","severity":{"score":6.3,"label":"Medium","version":"4.0","vector":"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","source":"GitHub_M"},"assigner":"GitHub_M","products":["parse-community parse-server"],"affected":[{"vendor":"parse-community","product":"parse-server","versions":[{"version":"< 8.6.54","status":"affected"},{"version":">= 9.0.0, < 9.6.0-alpha.43","status":"affected"}]}],"references":["https://github.com/parse-community/parse-server/security/advisories/GHSA-qpc3-fg4j-8hgm","https://github.com/parse-community/parse-server/pull/10253","https://github.com/parse-community/parse-server/pull/10254","https://github.com/parse-community/parse-server/commit/0c0a0a5a37ca821d2553119f2cb3be35322eda4b","https://github.com/parse-community/parse-server/commit/c62eacaf38de86913f09240583448360b1cc8e67"],"weaknesses":["CWE-203"],"ingestedAt":"2026-10-29T20:11:40.391Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/33xxx/CVE-2026-33429.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-33429","state":"PUBLISHED","datePublished":"2026-03-24T18:16:35.414Z","dateUpdated":"2026-03-25T13:34:05.792Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-03-19T18:45:22.434Z"},"containers":{"cna":{"title":"Parse Server: Protected field change detection oracle via LiveQuery watch parameter","descriptions":[{"lang":"en","value":"Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.54 and 9.6.0-alpha.43, an 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. This issue has been patched in versions 8.6.54 and 9.6.0-alpha.43."}],"affected":[{"vendor":"parse-community","product":"parse-server","versions":[{"version":"< 8.6.54","status":"affected"},{"version":">= 9.0.0, < 9.6.0-alpha.43","status":"affected"}]}],"references":[{"url":"https://github.com/parse-community/parse-server/security/advisories/GHSA-qpc3-fg4j-8hgm","name":"https://github.com/parse-community/parse-server/security/advisories/GHSA-qpc3-fg4j-8hgm","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/parse-community/parse-server/pull/10253","name":"https://github.com/parse-community/parse-server/pull/10253","tags":["x_refsource_MISC"]},{"url":"https://github.com/parse-community/parse-server/pull/10254","name":"https://github.com/parse-community/parse-server/pull/10254","tags":["x_refsource_MISC"]},{"url":"https://github.com/parse-community/parse-server/commit/0c0a0a5a37ca821d2553119f2cb3be35322eda4b","name":"https://github.com/parse-community/parse-server/commit/0c0a0a5a37ca821d2553119f2cb3be35322eda4b","tags":["x_refsource_MISC"]},{"url":"https://github.com/parse-community/parse-server/commit/c62eacaf38de86913f09240583448360b1cc8e67","name":"https://github.com/parse-community/parse-server/commit/c62eacaf38de86913f09240583448360b1cc8e67","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":6.3,"baseSeverity":"MEDIUM","vectorString":"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","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-203","lang":"en","description":"CWE-203: Observable Discrepancy","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-03-24T18:16:35.414Z"},"source":{"advisory":"GHSA-qpc3-fg4j-8hgm","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-25T13:33:05.574869Z","id":"CVE-2026-33429","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-03-25T13:34:05.792Z"}}]}}}