CVE-2026-33429

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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."}, {"lang": "es", "value": "Parse Server es un backend de c\u00f3digo abierto que puede ser desplegado en cualquier infraestructura que pueda ejecutar Node.js. Antes de las versiones 8.6.54 y 9.6.0-alpha.43, un atacante puede suscribirse a LiveQuery con un par\u00e1metro watch dirigido a un campo protegido. Aunque el valor del campo protegido se elimina correctamente de las cargas \u00fatiles de los eventos, la presencia o ausencia de eventos de actualizaci\u00f3n revela si el campo protegido cambi\u00f3, creando un or\u00e1culo binario. Para campos protegidos booleanos, el momento de los eventos de cambio es equivalente a conocer el valor del campo. Este problema ha sido parcheado en las versiones 8.6.54 y 9.6.0-alpha.43."}], "id": "CVE-2026-33429", "lastModified": "2026-06-17T10:37:29.107", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.3, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-33429", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-03-25T13:33:05.574869Z", "version": "2.0.3"}}]}, "published": "2026-03-24T19:16:53.883", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/parse-community/parse-server/commit/0c0a0a5a37ca821d2553119f2cb3be35322eda4b"}, {"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/parse-community/parse-server/commit/c62eacaf38de86913f09240583448360b1cc8e67"}, {"source": "security-advisories@github.com", "tags": ["Issue Tracking"], "url": "https://github.com/parse-community/parse-server/pull/10253"}, {"source": "security-advisories@github.com", "tags": ["Issue Tracking"], "url": "https://github.com/parse-community/parse-server/pull/10254"}, {"source": "security-advisories@github.com", "tags": ["Vendor Advisory"], "url": "https://github.com/parse-community/parse-server/security/advisories/GHSA-qpc3-fg4j-8hgm"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-203"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,8.6.54)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[9.0.0,9.6.0-alpha.43)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "parse-server", "source": "cna", "vendor": "parse-community"}, "product": "parse_server", "vendor": "parse_community"}], "analysis": {"en": {"generated_at": "2026-03-25T23:48:13.672358+00:00", "value": {"mitigation_remediation": ["Upgrade Parse Server to version 8.6.54 or later, or 9.6.0\u2011alpha.43 or newer, where the LiveQuery watch parameter no longer exposes change information.", "If an upgrade cannot be applied immediately, temporarily disable LiveQuery functionality for requests that may include protected fields or block the LiveQuery endpoint entirely until a patch is available.", "Verify that all protected fields are correctly configured in the server\u2019s security settings to prevent accidental exposure through other channels."], "summary": {"action": "Patch Immediately", "impact": "Binary Oracle Revealing Protected Field Changes"}, "threat_synthesis": {"affected_systems": "All Versions of the open\u2011source Parse Server developed by parse\u2011community, prior to 8.6.54 and 9.6.0\u2011alpha.43, are affected. The vulnerability applies to Deployments running on any Node.js\u2011capable infrastructure that hosts those versions.", "description_and_impact": "Parse Server allows clients to subscribe to LiveQuery updates with a watch parameter targeting a protected field; although the field value is removed from payloads, the mere occurrence or absence of update events signals whether the protected field has changed, creating a binary oracle. An attacker can infer the presence of a change and, for boolean fields, can deduce the exact value by observing the timing of notifications, thereby leaking sensitive data that should remain hidden.", "risk_and_exploitability": "The CVSS score of 6.3 indicates moderate severity. The EPSS score of less than 1% suggests a low probability of current exploitation. The vulnerability is not listed in the CISA KEV catalog and no public exploit has been reported, but the attack vector is inferred to be remote, as an attacker must send LiveQuery subscriptions to a publicly or internally reachable Parse Server instance."}}}}, "created": "2026-03-25T11:46:44.927931+00:00", "updated": "2026-03-26T12:19:00.525368+00:00", "vendors": ["parse_community", "parse_community$PRODUCT$parse_server"]}