CVE-2026-31872

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Prior to 9.6.0-alpha.6 and 8.6.32, the protectedFields class-level permission (CLP) can be bypassed using dot-notation in query WHERE clauses and sort parameters. An attacker can use dot-notation to query or sort by sub-fields of a protected field, enabling a binary oracle attack to enumerate protected field values. This affects both MongoDB and PostgreSQL deployments. This vulnerability is fixed in 9.6.0-alpha.6 and 8.6.32."}, {"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 9.6.0-alpha.6 y 8.6.32, el permiso a nivel de clase (CLP) protectedFields puede ser eludido usando la notaci\u00f3n de puntos en cl\u00e1usulas WHERE de consulta y par\u00e1metros de ordenaci\u00f3n. Un atacante puede usar la notaci\u00f3n de puntos para consultar u ordenar por subcampos de un campo protegido, lo que permite un ataque de or\u00e1culo binario para enumerar los valores de los campos protegidos. Esto afecta tanto a las implementaciones de MongoDB como de PostgreSQL. Esta vulnerabilidad est\u00e1 corregida en 9.6.0-alpha.6 y 8.6.32."}], "id": "CVE-2026-31872", "lastModified": "2026-06-17T10:34:40.373", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.7, "baseSeverity": "HIGH", "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:N/PR:N/UI:N/VC:H/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": "HIGH", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-31872", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-03-12T20:09:09.196392Z", "version": "2.0.3"}}]}, "published": "2026-03-11T18:16:26.830", "references": [{"source": "security-advisories@github.com", "tags": ["Product", "Release Notes"], "url": "https://github.com/parse-community/parse-server/releases/tag/8.6.32"}, {"source": "security-advisories@github.com", "tags": ["Product", "Release Notes"], "url": "https://github.com/parse-community/parse-server/releases/tag/9.6.0-alpha.6"}, {"source": "security-advisories@github.com", "tags": ["Patch", "Vendor Advisory"], "url": "https://github.com/parse-community/parse-server/security/advisories/GHSA-r2m8-pxm9-9c4g"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-284"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[9.0.0,9.6.0-alpha.6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,8.6.32)"}}], "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": "2026-03-17T17:08:46.023043+00:00", "value": {"mitigation_remediation": ["Upgrade Parse Server to version 9.6.0\u2011alpha.6 or newer, or to 8.6.32 or newer, as detailed in the vendor advisories.", "Verify that all running instances are on a patched version and restart the services after the upgrade.", "If upgrading immediately is not possible, monitor API request logs for unusual dot\u2011notation query or sort patterns that may indicate an attempted exploit."], "summary": {"action": "Apply Patch", "impact": "Unauthorized Data Access via Protected Field By-Pass"}, "threat_synthesis": {"affected_systems": "All installations of parse-community:parse-server running on Node.js are affected when the deployed version is older than 9.6.0\u2011alpha.6 or 8.6.32. Both MongoDB and PostgreSQL database backends are susceptible, as the issue lies in the query processing layer rather than the database itself. The CPE entries confirm that any 9.6.0-alpha and 8.6.32 releases are impacted.", "description_and_impact": "Parse Server, an open\u2011source backend for Node.js, enforces protectedFields through a class\u2011level permission (CLP). A flaw in versions prior to 9.6.0\u2011alpha.6 and 8.6.32 allows an attacker to use dot\u2011notation within query WHERE clauses and sort parameters to reference sub\u2011fields of a protected field, effectively bypassing the CLP. This results in a binary oracle that can enumerate the true values of fields that should remain hidden, thereby compromising data confidentiality. The vulnerability is classified as CWE\u2011284 \u2013 Improper Control of Access Permissions.", "risk_and_exploitability": "The CVSS score of 8.7 indicates a high severity, while the EPSS score of under 1\u202f% suggests current exploitation likelihood is low. The vulnerability is not listed in the CISA KEV catalog. Exploitation requires network access to the publicly exposed Parse Server API and does not necessitate authentication; an attacker can craft a query or sort string using dot\u2011notation to extract protected data. The lack of authentication requirements elevates risk for exposed deployments."}}}}, "created": "2026-03-12T09:57:26.433754+00:00", "updated": "2026-03-20T15:30:00.736013+00:00", "vendors": ["parse_community", "parse_community$PRODUCT$parse_server"]}