CVE-2026-30835

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Prior to versions 8.6.7 and 9.5.0-alpha.6, malformed $regex query parameter (e.g. [abc) causes the database to return a structured error object that is passed unsanitized through the API response. This leaks database internals such as error messages, error codes, code names, cluster timestamps, and topology details. The vulnerability is exploitable by any client that can send query requests, depending on the deployment's permission configuration. This issue has been patched in versions 8.6.7 and 9.5.0-alpha.6."}, {"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 8.6.7 y 9.5.0-alpha.6, un par\u00e1metro de consulta $regex malformado (por ejemplo, [abc) hace que la base de datos devuelva un objeto de error estructurado que se pasa sin sanitizar a trav\u00e9s de la respuesta de la API. Esto filtra detalles internos de la base de datos como mensajes de error, c\u00f3digos de error, nombres de c\u00f3digo, marcas de tiempo del cl\u00faster y detalles de topolog\u00eda. La vulnerabilidad es explotable por cualquier cliente que pueda enviar solicitudes de consulta, dependiendo de la configuraci\u00f3n de permisos del despliegue. Este problema ha sido parcheado en las versiones 8.6.7 y 9.5.0-alpha.6."}], "id": "CVE-2026-30835", "lastModified": "2026-06-17T10:32:59.973", "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": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.9, "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:N/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-2026-30835", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-03-09T20:28:44.809745Z", "version": "2.0.3"}}]}, "published": "2026-03-06T21:16:17.560", "references": [{"source": "security-advisories@github.com", "tags": ["Product", "Release Notes"], "url": "https://github.com/parse-community/parse-server/releases/tag/8.6.7"}, {"source": "security-advisories@github.com", "tags": ["Product", "Release Notes"], "url": "https://github.com/parse-community/parse-server/releases/tag/9.5.0-alpha.6"}, {"source": "security-advisories@github.com", "tags": ["Patch", "Vendor Advisory"], "url": "https://github.com/parse-community/parse-server/security/advisories/GHSA-9cp7-3q5w-j92g"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-209"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,8.6.7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,9.5.0-alpha.6)"}}], "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": "2026-04-16T11:13:25.982677+00:00", "value": {"mitigation_remediation": ["Upgrade Parse Server to version 8.6.7 or newer, or to 9.5.0\u2011alpha.6 or newer if using that release line.", "Validate and sanitize all query parameters on the client side to ensure that malformed regex patterns are not sent to the server.", "Restrict client permissions so that only trusted users or services can execute queries that include regex operators."], "summary": {"action": "Patch", "impact": "Information Disclosure"}, "threat_synthesis": {"affected_systems": "Parse Server products from the parse-community, specifically all releases prior to version 8.6.7 and the 9.5.0\u2011alpha.6 branch, are affected. Deployments running these older releases on any Node.js\u2011capable infrastructure are vulnerable. No other vendors or product variants are currently listed as impacted.", "description_and_impact": "The vulnerability occurs when a malformed $regex query, such as an incomplete pattern, is processed by Parse Server. The database returns a detailed error object that is not sanitized before being included in the API response. As a result, sensitive database internals\u2014including error messages, codes, cluster timestamps, and topology details\u2014are exposed to the attacker. The flaw is categorized as a CWE\u2011209 weakness in Error Handling and Logging.", "risk_and_exploitability": "The CVSS score of 6.9 indicates moderate severity, and the EPSS score of less than 1% suggests low likelihood of exploitation in the wild. The vulnerability is not listed in the CISA KEV catalog. The attack vector is inferred to be any client that can submit query requests to the Parse Server endpoint; exploitation depends on the deployment\u2019s permission configuration, so the risk is higher in environments with permissive client access."}}}}, "created": "2026-03-09T10:07:01.821573+00:00", "updated": "2026-04-16T11:15:27.692012+00:00", "vendors": ["parse_community", "parse_community$PRODUCT$parse_server"]}